List of Metrobus routes in Maryland

This is a list of bus routes operated by the Washington Metropolitan Area Transit Authority (WMATA), branded as Metrobus in Montgomery County, Maryland or Prince George's County, Maryland. Most routes operated under Streetcars in Washington, D.C., and Maryland prior to the 1960s.

Route F4 in Silver Spring

Route P12 at Addison Road station

Route Y7 at Silver Spring Transit Center

Numbering

Most Metrobus routes in MD begin with a letter followed by a number but some routes can have a double digit numbers. Prince Georges County routes would typically have a letter followed by two numbers.[1][2]

Odd-numbered routes are typically part-time variants of even-numbered routes. At one time, odd numbered routes were express routes, but that distinction has been abandoned. Most odd-numbered routes operates during rush hours and or limited stops with a few of them running into the off peak hours.

History

Many current routes operate under former streetcar routes. The streetcars provided the main transportation in the Maryland area from the 1800s to the 1960s.[3] Two separate companies, Washington, Virginia and Maryland Coach Company (WV&M), and the Washington Marlboro and Annapolis Motor Lines (WM&A) would also operate on the former streetcar routes and provide service to parts of MD when the Streetcars ended service. In 1973, WMATA acquired the two bus companies along with other bus companies to form its current Metrobus system.[4] At one point, most MD routes would enter into Downtown before Metro was built in which all buses would terminate at stations in various locations. Today, the main MD hub is at Silver Spring station

When Ride On began service, most Metrobus routes in Montgomery County were slowly transferred into Ride On routes through the years as it would be cheaper to operate under another carrier. Same thing went with TheBus.

Due to the COVID-19 pandemic, service has been mostly reduced to Sunday service schedules during the weekdays with select routes suspended since March 18, 2020. Routes 83, A12, C4, D12, F4, J2, K6, P12, T18, Y2, and Z8 only runs on weekends.[5] Beginning on August 23, 2020, more routes will come back during the weekdays and weekends.[6]

Routes

Most Maryland buses would remain inside Prince Georges County and Montgomey County. However a few routes would enter into Washington DC which was a part of their former streetcar lines. Only one current route operates between Maryland and Virginia (NH2).

Route	Terminals			Streets traveled	Service notes	Divisions
83, 83X, 86[7] College Park Line	Rhode Island Avenue–Brentwood station	↔	83, 83X Cherry Hill Park Campground 86 Calverton (4061 Center Park Roadway)	U.S. Route 1 Baltimore Avenue Rhode Island Ave	Early morning and late night 83 trips operate between Rhode Island Avenue and Mount Rainier daily. Select late night 83 trips operate between Rhode Island Ave and College Park-U of Md 83X operates the third Monday in June through the second Friday of August each year. Route 86 Sunday service is temporarily suspended.[6]	Landover
87[8] Laurel Express Line	Laurel (Baltimore Ave & Main St, AM Start; Cypress St & Laurel Lakes Ave, PM End)	↔	Greenbelt station New Carrollton station (East Side entrance) (select trips)	Baltimore-Washington Parkway Baltimore Avenue	Weekday peak hour service only Express route (Regular Fare) Route is temporarily suspended.[6]	Landover
89, 89M[9] Laurel Line	Laurel (Cherry Lane & 4th Street (AM); Middletown Apts (PM)	↔	Greenbelt station	Cherrywood Lane Kenilworth Avenue Edmonston Road Baltimore Avenue	89: Weekday peak hour service and post PM rush only. 89M: Weekday midday service only. Route 89 is temporarily suspended.[6]	Landover
A12[10] Martin Luther King Jr. Highway Line	Capital Plaza (Cooper Lane & Annapolis Road)	↔	Addison Road station (Monday-Saturday) Capitol Heights station (Sundays Only)	Landover Road Martin Luther King Jr Highway Addison Road	A12 trips end/begin at Capitol Heights station on Sundays only, replacing the F14 segment between the Capitol Heights and Addison Road stations.	Landover
B21, B22[11] Bowie State University Line	Bowie State University	↔	New Carrollton station (East Side)	Laurel-Bowie Road John Hanson Highway	Weekday service only	Landover
B24[12] Bowie-Belair Line	Bowie Park & Ride Lot	↔	New Carrollton station (West Side)	Annapolis Road	Weekday service only	Landover
B27[13] Bowie–New Carrollton Line	Bowie State University	↔	New Carrollton station (West Side)	Lanham-Severn Road	Weekday peak hour service only	Landover
B29[14] Crofton–New Carrollton Line	Crofton Country Club Gateway Center (Mitchellville Road & Harbour Way)	↔	New Carrollton station (East Side)	Crain Highway John Hanson Highway	Weekday peak hour service only Route is temporarily suspended.[6]	Landover
B30[15] Greenbelt–BWI Thurgood Marshall Airport Express Line	Baltimore/Washington International Thurgood Marshall Airport	↔	Greenbelt station	Baltimore-Washington Parkway Interstate 195	Weekday service only. Airport Express: $7.50 fare Route is temporarily suspended.[6]	Landover
C2, C4[16] Greenbelt–Twinbrook Line	C2 Wheaton station C4 Twinbrook station (East Side)	↔	C2 Greenbelt station C4 Prince George's Plaza station	University Boulevard Greenbelt Road (C2) Baltimore Avenue (C2) Riggs Road (C4) East-West Highway (C4)	C2: Sunday trips only operates between Takoma Langley Crossroads Transit Center and Greenbelt station. Some weekday and Saturday late night C2 trips are extended from Wheaton station to Randolph Road & Parklawn Drive.	Montgomery
C8[17] College Park–White Flint Line	White Flint station	↔	College Park–University of Maryland station	Randolph Road New Hampshire Avenue Adelphi Road	No Sunday service	Montgomery
C11, C13[18] Clinton Line	Clinton Park & Ride Lot	↔	Branch Avenue station	Branch Avenue	Weekday peak hour service only C11: AM to Clinton, PM to Branch Avenue (Express) C13: AM to Branch Avenue, PM to Clinton (Local)	Andrews Federal Center
C12, C14[19] Hillcrest Heights Line	Naylor Road station	↔	Branch Avenue Station	Branch Avenue Old Branch Avenue Iverson Street (C12)	C12: Weekday peak hour service only (AM to Naylor Road, PM to Branch Avenue) C14: No Sunday service C14 Saturday service is temporarily suspended.[6]	Andrews Federal Center
C21, C22, C26, C29[20] Central Avenue Line	C21, C22 Collington Center C26 Kettering (Watkins Park & Chesterton Drives) C21, C22, C29 Pointer Ridge (Hall Road & Central Ave) C29 Bowie State University (Saturdays only)	↔	C21, C22, C29 Addison Road station C26 Largo Town Center station	Central Avenue	C21: Weekday Peak Hour Service Only (AM to Collington Center, PM to Addison Road station) C22, C26: Weekday service only C29: Weekend service only.	Landover
C27[21] Central Avenue Line Supplemental Service	Addison Road station	↔	Pointer Ridge (Hall Road & Central Ave)	Central Avenue	Operates between Memorial Day weekend through Labor Day weekends only. Regular Service is provided by routes C21, C22, C26, and C29.	Landover
C28[22] Pointer Ridge Line	Pointer Ridge (Hall Road & Pointer Ridge Dr)	↔	New Carrollton station (East Side)	John Hanson Highway	Weekday peak hour service only Route is temporarily suspended.[6]	Landover
D12, D13, D14[23] Oxon Hill–Suitland Line	Suitland station	↔	Southern Avenue station	St. Barnabas Road (D12) Brinkley Road (D13, D14) Allentown Road (D13, D14) Indian Head Highway (D13, D14)	D13: Weekday peak hour service only (AM to Southern Avenue, PM to Suitland/Camp Springs)	Andrews Federal Center
F1, F2[24] Chillum Road Line	Takoma station	↔	Cheverly station	Chillum Road Eastern Avenue 34th Street (F2) Landover Road	F1: Weekday service only F2: Operates early mornings, late nights, and all day weekends only.	Landover
F4[25] New Carrollton–Silver Spring Line	Silver Spring station (Paul S. Sarbanes Transit Center)	↔	New Carrollton station (West Side)	East-West Highway Philadelphia Avenue Riverdale Road Queensbury Road		Landover
F6[26] New Carrollton–Fort Totten Line	Fort Totten station	↔	New Carrollton station (West Side)	East-West Highway Sargent Road	Weekday Service Only	Landover
F8[27] Langley Park–Cheverly Line	Takoma Langley Crossroads Transit Center	↔	Cheverly station	University Boulevard Adelphi Road Baltimore Avenue Landover Road		Landover
F12[28] Ardwick Industrial Park Shuttle Line	New Carrollton station (East Side)	↔	Cheverly station	Pennsy Drive Landover Road Martin Luther King Highway	Weekday service only	Landover
F13[29] Cheverly–Washington Business Park Line	Washington Business Park (Forbes Blvd & Senate Drive)	↔	Cheverly station	Annapolis Road Whitfield Chapel Road Martin Luther King Jr. Highway	Weekday service only	Landover
F14[30] Sheriff Road–Capitol Heights Line	New Carrollton station (East Side)	↔	Naylor Road station	Sheriff Road Martin Luther King Jr Highway Larchmont Avenue Southern Avenue	No Sunday service	Landover
G12, G14[31] Greenbelt–New Carrollton Line	Greenbelt station	↔	New Carrollton station (West Side)	Greenbelt Road Cipriano Road (G14) Hanover/Princess Garden Parkway (G12) Annapolis Road	Early morning G14 trips bypass Beltway Plaza during the weekdays.	Landover
H11, H12, H13[32] Temple Hills–Marlow Heights Line	Temple Hills (Heather Hills Apartments)	↔	Naylor Road station	St. Barnabas Road Branch Avenue	H11, H13: Weekday peak hour service only H11: AM to Naylor Road, PM to Temple Hills (via the Princeton Estates Apartments) H13: AM to Temple Hills, PM to Naylor Road Routes H11 and H13 are temporarily suspended.[6] Route H12 Sunday service is temporarily suspended.[6]	Landover
J1, J2[33] Bethesda–Silver Spring Line	Montgomery Mall	↔	Silver Spring station (Paul S. Sarbanes Transit Center)	Old Georgetown Road East-West Highway Jones Bridge Road Rockledge Drive	J1 : Weekday peak hour service only (AM to Montgomery Mall, PM to Silver Spring)	Montgomery
J4[34] College Park–Bethesda Line	Bethesda station	↔	College Park–University of Maryland station	East-West Highway University Boulevard East	Weekday peak hour service only Limited Stops Only (Becomes local between College Park station and University of Maryland) Route is temporarily suspended.[6]	Montgomery
J12[35] Marlboro Pike Line	Forestville (8431 Old Marlboro Pike)	↔	Addison Road station	Central Avenue Larchmont Avenue Marlboro Pike	Weekday peak hour J12 trips serve the Presidential Corporate Center (Machinists Building).	Andrews Federal Center
K6[36] New Hampshire Avenue–Maryland Line	White Oak Shopping Center	↔	Fort Totten station	New Hampshire Avenue		Bladensburg
K9[37] New Hampshire Avenue–Maryland Limited Line	Food & Drug Administration/Federal Research Center	↔	Fort Totten station	New Hampshire Avenue	Weekday peak hour service only Limited-Stop Service Route is temporarily suspended.[6]	Bladensburg
K12[38] Forestville Line	Branch Avenue station	↔	Suitland station	Allentown Road Silver Hill Road Forestville Road	Select peak hour trips begins/ends at Penn Mar Shopping Center	Andrew Federal Center
L8[39] Connecticut Avenue–Maryland Line	Aspen Hill (Grand Pre & Bel Pre Roads)	↔	Friendship Heights station	Connecticut Avenue	Operates as a Ride-On bus during the weekends.	Montgomery
NH1[40] National Harbor–Southern Avenue Line	Southern Avenue station	↔	National Harbor (St. George Boulevard & Waterfront Street)	Southern Avenue Owens Road Oxon Hill Road		Shepherd Parkway
NH2[41] National Harbor–Alexandria Line	Huntington station	↔	National Harbor (St. George Boulevard & Waterfront Street)	I-495 Monument Avenue / MGM National Avenue Huntington Avenue	Weekend service is temporarily suspended.[6]	Shepherd Parkway
P12[42] Eastover–Addison Road Line	Eastover Shopping Center	↔	Addison Road station	Silver Hill Road Iverson Street		Landover
P18, P19[43] Oxon Hill–Fort Washington Line	Fort Washington Park & Ride Lot	↔	Southern Avenue station	Oxon Hill Road Southern Avenue	P19: Weekday peak hour service only (AM to Southern Avenue, PM to Fort Washington). P18: Weekday service only. Limited-stop segment between Southern Avenue station and Indian Head Highway. Route P19 is temporarily suspended.[6]	Shepherd Parkway
Q1, Q2, Q4, Q5, Q6[44] Veirs Mill Road Line	Q1, Q2, Q5, Q6 Shady Grove station Q4 Rockville station (West Side)	↔	Silver Spring station (Paul S. Sarbanes Transit Center) (Q1, Q2, Q4) Wheaton station (Q5, Q6)	Veirs Mill Road Georgia Avenue (Q1, Q2, Q4)	Q1: Early Morning And Late Night Service Only. Q2, Q6: No Sunday Service. Q2 only operates Weekday Morning Peak Hour Service And late night service only between Monday and Saturday. Q5: Sunday Service Only. Most weekday and Saturday trips are temporarily designated as route Q1.[6] Route Q2 and Q6 Saturday service is temporarily suspended.[6]	Montgomery
R1, R2[45] Riggs Road Line	R1 Adelphi (Riggs Rd & Edwards Way) R2 Calverton (Plum Orchard Drive & Healing Way)	↔	Fort Totten station	Riggs Road	R1: Weekday peak hour service only (AM to Fort Totten, PM to Adelphi)	Bladensburg
R4[46] Queens Chapel Road Line	Highview	↔	Brookland-CUA station	Queens Chapel Road Michigan Avenue NE		Bladensburg
R12[47] Kenilworth Avenue Line	Deanwood station	↔	Greenbelt station	Kenilworth Avenue Edmonston Road	Weekday early morning trips bypass Beltway Plaza. No Sunday service Saturday service is temporarily suspended.[6]	Landover
T2[48] River Road Line	Rockville station (east side)	↔	Friendship Heights station	Falls Road River Road	Operates as a Ride-On bus during the weekends.	Montgomery
T14[49] Rhode Island Avenue–New Carrollton Line	New Carrollton station (West Side)	↔	Rhode Island Avenue - Brentwood station	Riverdale Road Edmonston Road Rhode Island Avenue NE	Early Weekday AM trips originate at Mount Rainier terminal. Limited-stop segment between Rhode Island Avenue station and Mount Rainier terminal. Sunday service is temporarily suspended.[6]	Landover
T18[50] Annapolis Road Line	New Carrollton station (West Side)	↔	Rhode Island Avenue - Brentwood station	Annapolis Road Rhode Island Avenue NE	Limited-stop segment between Rhode Island Avenue station and Mount Rainier.	Landover
V12[51] District Heights–Suitland Line	Addison Road station	↔	Suitland station	Shadyside Avenue Marlboro Pike		Landover
V14[52] District Heights–Seat Pleasant Line	Penn Mar Shopping Center	↔	Deanwood station	Walker Mill Road Central Avenue Addison Road		Landover
W14[53] Bock Road Line	Fort Washington Forest (Old Fort Road & Indian Head Highway) Friendly (Allentown & Old Fort Roads)	↔	Southern Avenue station	Bock Road Southern Avenue	Weekday service only. Select weekday peak hour trips are extended to Fort Washington Forest Limited-stop segment between Southern Avenue station and Indian Head Highway.	Shepherd Parkway
Y2, Y7, Y8[54] Georgia Avenue–Maryland Line	Y2, Y8 MedStar Montgomery Medical Center Y7 Georgia Ave – ICC Park & Ride Lot	↔	Silver Spring station (Paul S. Sarbanes Transit Center)	Georgia Avenue	Y7: Weekday service only Y2 bypasses Leisure World and the ICC Park & Ride lot. Y8 operates via Leisure World, and bypasses the ICC Park & Ride	Montgomery
Z2[55] Colesville–Ashton Line	Olney (Spartan Rd & Georgia Ave)	↔	Silver Spring station (Paul S. Sarbanes Transit Center)	New Hampshire Avenue Colesville Road	Weekday peak hour service only.	Montgomery
Z6[56] Calverton–Westfarm Line	Burtonsville Shopping Center	↔	Silver Spring station (Paul S. Sarbanes Transit Center)	Old Columbia Pike Briggs Chaney Road Calverton Blvd Colesville Road	No Sunday service Saturday service is temporarily suspended.[6]	Montgomery
Z7[57] Laurel–Burtonsville Express Line	South Laurel Park & Ride Lot	↔	Silver Spring station (Paul S. Sarbanes Transit Center)	Cherry Lane Sandy Spring Road Old Columbia Pike Columbia Pike Colesville Road	Weekday peak hour service only (AM to Silver Spring, PM to South Laurel Park & Ride) Express Service (Local fare)	Montgomery
Z8[56] Fairland Line	Greencastle Park & Ride Lot	↔	Silver Spring station (Paul S. Sarbanes Transit Center)	Castle Blvd Old Columbia Pike Colesville Road		Montgomery
Z11[58] Burtonsville–Greencastle Express Line	Burtonsville Park & Ride Lot.	↔	Silver Spring station (Paul S. Sarbanes Transit Center)	Columbia Pike Castle Blvd	Weekday peak hour service only (AM to Silver Spring, PM to Burtonsville Park & Ride.) Express Service (Local fare) Route is temporarily suspended.[6]	Montgomery

Routes History

Route	History
83, 83X, 86	Formerly known as the Rhode Island Avenue-Maryland Line (along with the former 84 & 85) and the Maryland Line 81, 82, 83, and 86 operate on portions of the old 82 Maryland Streetcar Line, which ran from West Potomac Park to Branchville until replaced by buses in 1958; they operate on the old route served by the 82 until 1993. 86 operates on portions of the old 84 & G6 Maryland Streetcar Line, which ran from Branchville to Beltsville until replaced by buses between 1949 & 1958. 81 was discontinued on March 27, 2016 and replaced by routes 83 and C2.[59] 82 was discontinued on December 18, 2016 and replaced by route 83.[60]
87	87 originally operated between College Park, Maryland and West Potomac Park under the old 87 streetcar station. 87 operated to K St. & 11th St. NW via the Government Printing Office, SW Mall (L'Enfant Plaza station), West Potomac Park (State Department) until Greenbelt Station opened in 1993. All Route 88 service was eliminated March 30, 2014.[61]
89, 89M	89 originally operated between Mount Rainier terminal and West Potomac Park around the 1950s to 1960s. 89 used to operated between Rhode Island Avenue station until the Greenbelt station opened on December 11, 1993.[62]
A12	Route A12 is extended to Capitol Heights station on Sundays only replacing a portion of route F14.[63] A11, A12 used to serve the former Landover Mall site until March 30, 2014.[61] Route A11 was discontinued on March 29, 2015.
B21, B22
B24	B25 was replaced by the B24 on August 23, 2015.[64]
B27
B29	Route B31 was discontinued on June 26, 2016, and replaced by route B29.[65]
B30	On June 25, 2017, Saturday and Sunday service on the B30 Line was eliminated.[66] On June 24, 2018, B30 was rerouted to serve the Arundel Mills Mall.[67]
C2, C4	C2 was extended to Greenbelt Center after Greenbelt station opened in December 1993.[62] But the route was truncated to Greenbelt station December 2010.[68] C4 extended to Prince George's Plaza station from Langley Park after PG Plaza station opened in December 1993.[62] As of June 22, 2014, eastbound C2 buses now operate on Stadium Drive during the Campus Drive construction project; westbound route remains unchanged.[69] On March 27, 2016, Sunday service was added to the C2 between Greenbelt station and Takoma Langley Crossroads Transit Center only.[59]
C8	Added service to the Food and Drug Administration/Federal Research Center (weekdays only) and Archives II (weekdays only) on June 17, 2012.[70] Since June 22, 2014, eastbound C8 buses now operate on Stadium Drive during the Campus Drive construction project; westbound route remains unchanged.[69]
C11, C13
C12, C14	C12: AM trips skip the Marlow Heights Shopping Center Roadway. C12 & C14 originally operated between Potomac Avenue station & intersection of Auth Road up until Naylor Road & Branch Avenue stations opened on January 13, 2001.
C21, C22, C26, C29	C26 served Addison Road station until Largo Town Center station opened in 2004.[71] The C26 was originally part of the "Kingsford-Addison Road Line" along with the old C23, C24, & C25 around the late 1990s to early 2000s.[62] Sunday C29 service was added on December 18, 2004.[71] C22 and C29 was rerouted to no longer serve Harry S Truman Drive south of Mount Lubentia Way as of 2/23/2018 due to a deficient bridge. C29 was rerouted to Bowie State University in March 2006 on Saturdays only.[72]
C27	Introduced on May 28, 2005.[73] Provides extra service for the C21/C22/C26/C29 during the summer seasons.
C28	C28 replaced by C29 (Central Avenue Line) from Addison Road station on Saturdays only (no Sunday Service Replacement).
D12, D13, D14	D12 originally operated alongside the former S12 routing between the Eastover Shopping Center & Federal Center station, via the Marlow Heights Shopping Center until the Southern Avenue & Suitland stations opened on January 13, 2001.[74] Route S12 was discontinued on January 13, 2001, and the D12 was truncated to only operate between the Southern Avenue & Suitland stations.[74] Routes D13 and D14 were created on January 13, 2001 which were a rename route W11 and W12, to operate between the newly opened Southern Avenue and Suitland stations, via Andrews Air Force Base, as well as Camp Springs and Temple Hills neighborhoods, and a small portion of Indian Head Highway, Forest Heights, and Glassmanor neighborhoods, which former Routes W11, W12, and W17 originally operated on between the Federal Center SW station & Acokeek up until the Southern Avenue station opened on January 13, 2001. [74] D13 & D14 does not serve the Marlow Heights Shopping Center.
F1, F2	F1 replaced the old F3 on December 11, 1993.[62]
F4	The New Carrollton-Silver Spring Line was originally operated by route F4 and F6. Route F6 was split from the line and rerouted from Silver Spring to Fort Totten station on June 17, 2012.[70]
F6	Originally apart of the New Carrollton-Silver Spring Line alongside route F4. Rerouted to Fort Totten station on June 17, 2012 replacing route R3.[70]
F8	F8 operates on portions of the old B6, G4, G8, and 88 streetcar lines.
F12
F13
F14	Formerly known as the Sheriff Road Line. F14 used to terminate at Bradbury Heights (Southern Avenue & Pear Street) until Naylor Road opened in 2001.[74] Service between Capitol Heights and Addison Road stations on Sundays is provided by route A12.[63] Detours on Sheriff Road at Redskins Road During Events at FedExField.
G12, G14	Formerly known as routes T16 & T17 G12 replaces the portions of the C2 & R12 east of Greenbelt to/from Greenbelt Center/New Carrollton.[68] G13, G14 & G16 replaces parts of routes C2 and T16 & T17 in its entirety.[68] Routes G13 and G16 was discontinued on March 27, 2016 and replaced with the G12 & G14 routes.[59] Routes G12 and G14 added Sunday service on March 27, 2016.[59]
H11, H12, H13	H11 via the Princeton Estates Apartments H13 bypasses Hillcrest Heights and Marlow Heights H11, H13: skips Marlow Heights Shopping Center Roadway H11, H12 ans the former H14 used to operate all the way between the Potomac Avenue station and Temple Hills until Naylor Road station opened on January 13, 2001.[74] Once Naylor Road station opened on January 13, 2001, H14 was replaced by H13 and H11 and H12, as well as the new H13 Metrobus Route, were truncated to only operate between the Naylor Road Metro Station & Temple Hills.[74]
J1, J2	J2 originally operated between Montgomery Mall to Beltway Plaza before being replaced by route F6. J1 used to go all the way to Montgomery Mall until it was truncated to Medical Center station on December 19, 2010.[68] Eastbound J2 buses serve the bus stop on Rockville Pike & South Drive at Medical Center station and no longer enter the bus loop as of June 24, 2018.[67] J1 was extend back to Montgomery Mall on June 24, 2018 which replaced route J3.[67]
J4	A prior incarnation of route J4 operated between Beltway Plaza to Friendship Heights and then alongside route J2 until being discontinued. Introduced on April 15, 2002.[75] Since June 22, 2014, eastbound J4 buses operate on Stadium Drive during the Campus Drive construction project; westbound route remains unchanged.[69]
J12	Routes J11 and J13 were replaced by route J12 on June 26, 2016.[65]
K6	K6 operated south of Fort Totten to Metro Center and Federal Triangle when Metrorail was not open until Metro started operating earlier in the early 1990s. K6 discontinued service to the FDA campus on December 29, 2013.[76]
K9	Begin service on December 30, 2012[77] K9 no longer serves Northwest Park Apartments & was extended to Food & Drug Administration/Federal Research Center on December 29, 2013.[76]
K12	Route K11 was replaced by K12 on June 26, 2016.[65] K12 was rerouted to serve Donnell Drive and Marlboro Pike as of June 24, 2018.[67] K13 was replaced by K12 on June 24, 2018.[67]
L8	Originally operated to Silver Spring station before Friendship Heights station opened.
NH1	NH1 service was implemented in March 2008 between National Harbor and Southern Avenue station via Indian Head Highway and Southern Avenue. It was rerouted to Branch Avenue station in August 2009. NH3 was introduced December 29, 2013[76] but was eliminated June 21, 2015. NH1 was then rerouted back to its original Southern Avenue station terminus and now operates via Southview Apartments.[78]
NH2	NH2 is the only transit service connecting Maryland and Virginia via the Woodrow Wilson Bridge. NH2 was introduced October 23, 2016, as a pilot and was made a permanent route in 2017.[79] Service to Huntington station will be eliminated on August 23, 2020.[6]
P12	Route no longer enters United Medical Center parking lot. Passengers wishing to visit hospital must alight/board at Forest Hills Apartments.[78] Route no longer operates on Walker Mill Road, Shady Glen Drive or Central Avenue, service on these streets is now provided by Route V12.[78] Route now operates on South Addison Road, replacing the former V12 routing.[78]
P18, P19	P18 was rerouted to Southern Avenue station via Southern Avenue on June 21, 2015.[78] Service to South Capitol Street, Firth Sterling Avenue and Anacostia station was discontinued on June 21, 2015.[78] Route P17 and P19 service to downtown DC was discontinued on June 25, 2017.[66] Route P17 was replaced by P18 on June 25, 2017.[66]
Q1, Q2, Q4, Q5, Q6	Q2 originally operated between Wheaton Plaza to Montgomery Village before being rerouted between Silver Spring and Shady Grove. Q1, Q4, Q5 and Q6 were introduced on December 27, 2009, to restructure the Q2.[80] Q1 had a prior "incarnation" as a Veirs Mill Road Line until 2001. Q4 had a prior "incarnation" as the Randolph Road Line until the late 1990s. Q1 & Q5 skips Montgomery College-Rockville while the Q2 & Q6 serve Montgomery College-Rockville
R1, R2	R2 and R8 originally served Crystal City and then Kennedy Center prior to the 1980s. R2 originally under the Queens Chapel Road Line until the Green Line extension to Greenbelt opened in 1993, having the R2 (alongside the R1) replace the R8 & R9.[62] R2 has not served Prince George's Plaza station since June 17, 2012 when it was rerouted into Lewisdale to replace R3.[70]
R4	R4 is a combination of the former R2, R4, R6 & R7 routes between Brookland station & West Hyattsville, replacing routes R6 and R7 in its entirety between West Hyattsville & Highview while route R2 was rerouted to Fort Totten station to become a part of the Riggs Road Line after the Greenbelt extension opened in 1993.[62]
R12	Formerly the Kenilworth Avenue-New Carrollton Line until December 2010 when the route east of Greenbelt station was replaced by G12.[68] R11 was replaced by route R12 on August 23, 2015.[64]
T2
T14	84 was renamed T14 on December 14, 2014.[81] T14 had a prior "incarnation" as part of the Bowie-Belair Line until the mid-1990s when the route was discontinued.
T18
V12	Route no longer operates on South Addison Road, service on this street is now provided by Route P12.[78] Route now operates on Central Avenue, Shady Glen Drive and Walker Mill Road, replacing the former P12 routing.[78]
V14	V15 was replaced by V14 on March 27, 2016.[59] Sunday service now runs the full route between Penn Mar Shopping Center & Deanwood station as of March 27, 2016.[59] Select trips end at Addison Road station.
W14	W14 was rerouted to Southern Avenue Metrorail station via Southern Avenue on June 21, 2015, with service to South Capitol Street, Firth Sterling Avenue and Anacostia Metrorail station was discontinued.[78] Route W13 was replaced by W14 on June 25, 2017.[66]
Y2, Y7, Y8	Routes Y5 & Y9 were eliminated August 24, 2014, and replaced by Y7 and Y8.[82] Route Y2 is a "reincarnated" route Y9 that was introduced on December 14, 2014.[81] Route Y8 discontinued all weekend service on December 14, 2014 but resumed weekend service on June 25, 2017.[66] Route Y7 discontinued all weekend service on June 25, 2017.[66]
Z2	Z2 was named the Colesville Road Line until 2004. Midday service was discontinued on June 28, 2009.[83] The Saturday Z2 service, which operated as a Ride On route since September 1993, was eliminated January 12, 2013, due to very low ridership.[77]
Z6	Z6 had a prior incarnation operating between Four Corners (Marked Franklin via Dale) and Silver Spring. Saturday service began on March 27, 2016, and operates between Silver Spring station & Castle Blvd only.[59]
Z7	Route Z7 replaced the Z9 & Z29 on March 27, 2016.[59] Z7 had a prior "incarnation" as the Calverton Express Line along with the former Z17 until it was discontinued on September 26, 2004.
Z8	Z8 originally operated between the Silver Spring station and Burtonsville Park & Ride until September 26, 2004, when it was replaced by the Z6.
Z11	Route Z11 was extended from Greencastle Park & Ride to Burtonsville Park & Ride and was renamed "Burtonsville-Greencastle Express Line" on March 27, 2016.[59] Route Z13 was discontinued and replaced by the Z11 on March 27, 2016.[59]

Former Routes

These routes have been served by Metrobus at one point but have since been discontinued due to either low ridership, duplication of another route, simplification to other routes, combined into another route, low funding, or transferred to another bus company as it would be cheaper to maintain cost and for another carrier to operate the line. However some routes would be reincarnated into new routes for Metrobus. Examples of reincarnations were the C8, and Z6.

Route	Terminals			Streets traveled	History
81 College Park Line	Rhode Island Avenue–Brentwood station	↔	Cherry Hill Campground (Jayrose Boulevard & Cherry Hill Road)	U.S. Route 1 Baltimore Avenue Rhode Island Avenue	Discontinued on March 27, 2016, replaced by 83.[59]
82 College Park Line	Rhode Island Avenue–Brentwood station	↔	Mount Rainier Terminal	Rhode Island Avenue	A prior incarnation of route 82 would operate to Hollywood, Maryland. Discontinued on December 18, 2016, replaced by 83.[60]
84 Rhode Island Avenue-New Carrollton Line	Rhode Island Avenue–Brentwood station	↔	New Carrollton station	Kenilworth Avenue Riverdale Road Rhode Island Avenue	Renamed T14 on December 14, 2014.[81]
85 Rhode Island Avenue-New Carrollton Line	Rhode Island Avenue–Brentwood station	↔	New Carrollton station	Kenilworth Avenue Riverdale Road Rhode Island Avenue	Discontinued on December 30, 2007 and replaced by route 84.[84]
88 Laurel Express Line	Laurel (Baltimore Av & Main St, AM Start; Cypress St & Laurel Lakes Av, PM End)	↔	New Carrollton station	Baltimore-Washington Parkway	Originally operated between Chevery to Rhode Island Ave Discontinued on March 30, 2014. Replaced by route 87.[61]
A11 Martin Luther King Jr. Highway Line	Capital Plaza	↔	Federal Triangle station (11th & E Sts., N.W.)	Martin Luther King Jr Ave Pennsylvania Avenue (NW, NE, SE)	Discontinued on March 29, 2015, replaced by A12.
A13, A17 Martin Luther King Jr. Highway Line		↔		Martin Luther King Jr Ave	Discontinued on November 21, 1978, replaced by A12.[85][86]
A15 Martin Luther King Jr. Highway Line	Capital Plaza Mall	↔	Addison Road station	Landover Road	Discontinued on December 18, 2004 and replaced by a combination of A12 and Prince George's County The Bus Route 22.[87][71]
B11 Bethesda Reverse Commute Line	Rosslyn station	↔	Medical Center	Wisconsin Avenue	Discontinued on December 27, 2003.[88]
B12	Penn Mar	↔	Potomac Avenue station	Pennsylvania Avenue	Discontinued November 21, 1978, replaced by V11 & V12.[86]
B19	Suitland Federal Center	↔			Discontinued November 21, 1978, replaced by H17 & K17.[86]
B23 Bowie–Belair Line	Bowie Park & Ride Lot	↔	New Carrollton station (West Side)	Annapolis Road Fontana Drive	Discontinued on September 29, 2002 and replaced by route B24.[89]
B25 Bowie-Belair Line	Bowie Park & Ride Lot	↔	New Carrollton station (West Side)	Annapolis Road	Discontinued on August 23, 2015, replaced by B24.[64]
B31 Crofton-New Carrollton Line	Bowie Gateway Center	↔	New Carrollton station	Crain Highway John Hanson Highway	Discontinued on June 26, 2016, replaced by B29.[65]
C1, N8[90] Wilson Lane Line	Glen Echo	↔	Friendship Heights station	Wisconsin Avenue River Road Wilson Lane Old Georgetown Road Goldsboro Road	Discontinued between the 1980s to 1990s and replaced by Ride On Route 29.
C3, C5		↔			Discontinued on January 2, 1981.[63]
C6	White Oak	↔	Montgomery College
C6	Twinbrook	↔	Hillandale		Discontinued in 1998 and replaced by Ride On 10 and Metrobus C8
C7, C9 Greenbelt–Glenmont Line	Greenbelt Station	↔	Glenmont station	Randolph Road	Discontinued on June 28, 2009.[83]
C8[91] Aspen Hill Road-Montgomery Mall Line	Montgomery Mall	↔	Glenmont station	Randolph Road	Discontinued in 1996 and replaced by Ride On 26. C8 was reincarnated as the Glenmont–College Park Line in July, 1998 and later the College Park-White Flint Line on January 13, 2001
C18 Waldorf-Branch Avenue Line	Waldorf, Maryland	↔	Branch Avenue station	Branch Avenue Crain Highway Smallwood Drive Saint Charles Parkway Mattawoman-Beantown Road	Introduced on December 30, 2001 Discontinued on December 27, 2003.[88]
C23, C24[62] Kingsford-Addison Road Line	Addison Road station	↔	Kingsford		C24 discontinued in December, 1998 and replaced by the C25 route C23 discontinued around 2003
C25 Central Avenue Line	Addison Road station	↔	East Kettering	Central Avenue	Discontinued on December 18, 2004 and replaced by route C26.[71][92]
F3 Chillum Road Line	Takoma station	↔	Columbia Park	Chillum Road	Discontinued on December 11, 1993. Replaced by F8 & F12[62]
F5 Sargent Road Line	Fort Totten station	↔	The Mall at Prince Georges	Sargent Road	Discontinued December 11, 1993, replaced by R3.[62] See Greenbelt–Fort Totten Line
F9	Lewisdale	↔	Potomac Park
G1 Greenbelt Station Parking Lot Shuttle	Greenbelt Station	↔			Discontinued on December 27, 2003.[88]
G7, G9 Queens Chapel Road Line	Highview Apartment Complex	↔	Downtown, Washington D.C.		Discontinued February 6, 1978, replaced by the R2, R4, R6, and R7 G9 was reincarnated as the Rhode Island Avenue Limited Line in 2017 See Queens Chapel Road Line.
G8	Langley Park, Maryland	↔	Prince George's Hospital Center
G13, G16 Greenbelt-New Carrollton Line	Greenbelt station	↔	New Carrollton station	Greenbelt Road Cipriano Road Annapolis Road	Discontinued on March 27, 2016, and replaced by G12 and G14.[59]
H14 Temple Hills–Marlow Heights Line	Potomac Avenue station	↔	Heather Hills Apartments		Discontinued in 2001 after Naylor Road Station opened, replaced by H13.[74]
H17	Potomac Avenue station	↔			Discontinued on November 21, 1978.[86]
J3 Bethesda–Silver Spring Line	Montgomery Mall	↔	Silver Spring station (Paul S. Sarbanes Transit Center)	Democracy Boulevard Old Georgetown Road Cedar Lane Rockville Pike/ Wisconsin Avenue East-West Highway	Discontinued on June 24, 2018, replaced by J1.[67]
J5 Twinbrook–Silver Spring Line	Twinbrook station (West Side)	↔	Silver Spring station (Paul S. Sarbanes Transit Center)	Rockville Pike Capital Beltway	Discontinued on June 25, 2017.[66]
J6[90] Bethesda–Silver Spring Line	Federal Triangle	↔	Silver Spring station
J7		↔			Discontinued September 24, 1978, replaced by C1 & T1.[85]
J7 Rock Spring Park Express Line		↔		South Drive Center Drive Old Georgetown Road Democracy Boulevard Rockledge Drive.	Discontinued on December 29, 1996 and replaced by route J1.[93]
J7, J9 I–270 Express Line	Lakeforest Mall	↔	Bethesda station	Interstate 270	Discontinued on September 29, 2017; Replaced by Ride On 101.[94]
J8	Wheaton Plaza	↔	Beltway Plaza Mall
J8 I–270 Express Line	Lakeforest Mall	↔	Bethesda station	Interstate 270	Renamed as J7 on September 26, 2004.[95]
J11, J13 Marlboro Pike Line	J11 Addison Road station J13 Potomac Avenue station	↔	Forestville (8431 Old Marlboro Pike)	Marlboro Pike Larchmont Avenue	Discontinued on June 26, 2016, replaced by J12.[65]
J14, J15 Marlboro Pike Line	Addison Road station	↔	Ritchie	Marlboro Pike Larchmont Avenue	Discontinued on December 18, 2004; replaced by TheBus #24.[71][87]
J16 Marlboro Pike Line	Potomac Avenue station	↔		Palmer Highway Addison Road Central Avenue Larchmont Avenue Marlboro Pike Bowen Road Alabama Avenue Pennsylvania Avenue	Discontinued January 1, 1981, replaced by A12, F14, J12 & J14.[63]
K5, K8 New Hampshire Avenue Line[96]		↔
K7, K9	Tamarack	↔	K7 Southwest Mall K9 Federal Triangle
K11 Forestville Line	Penn Mar Shopping Center	↔	Potomac Avenue station	Pennsylvania Avenue	Discontinued on June 26, 2016, replaced by K12.[65]
K13 Forestville Line	Penn Mar Shopping Center	↔	Suitland station	Pennsylvania Avenue	Introduced on January 13, 2001 Discontinued on June 24, 2018, replaced by K12.[67]
K14 Forestville Line		↔			Discontinued on January 13, 2001, replaced by K12.
K17[86]		↔
K18	Upper Marlboro, Maryland	↔	Fairfax Village
K19 Forestville Line	Potomac Avenue station	↔	Penn Mar	Pennsylvania Avenue	Discontinued on January 13, 2001, replaced by K13.[97][74]
L6	Wheaton station	↔	Van Ness–UDC station
L7 Connecticut Avenue-Maryland Line	Wheaton station	↔	Friendship Heights station	Connecticut Avenue	Discontinued June 28, 2009.[83]
M11 Suitland Line	Potomac Avenue station	↔	Suitland station	Pennsylvania Avenue	Discontinued on January 13, 2001 and replaced by routes D13, D14, and K12.[74]
M12		↔
N11, N13 Branch Avenue-King Street Express Line	N11 Branch Avenue station N13 Suitland station	↔	King Street–Old Town station	Saint Barnabas Road (N13) Oxon Hill Road (N11) Woodrow Wilson Bridge	Introduced on January 13, 2001.[74] Discontinued on June 26, 2004.[98][99]
NH3 National Harbor–Southern Avenue Line	Southern Avenue station	↔	National Harbor (St. George Boulevard & Waterfront Street)	Capital Beltway Indian Head Highway	Discontinued on June 21, 2015 and replaced by route NH1.[78]
P13 Oxon Hill-Pentagon Line	Pentagon station	↔	Eastover Shopping Center	Woodrow Wilson Bridge Indian Head Highway Washington Street George Washington Memorial Parkway Eads Street	Discontinued on January 13, 2001, when Southern Avenue Metro Station opened. Replaced by the N11 and N13.[74]
P17 Oxon Hill–Fort Washington Line	Farragut Square	↔	Fort Washington Park & Ride Lot	Oxon Hill Road South Capitol Street	Discontinued on June 25, 2017, replaced by Route P18.[66]
Q1 Veirs Mill Road Line	Rockville	↔	Silver Spring station	Veirs Mill Road	Discontinued on January 13, 2001 Q1 was eventually "reincarnated" in December, 2009.[80]
Q3	Glenmont	↔	Aspen Hill		Discontinued in 1998 & replaced by Ride On route 41.[100]
Q4 Randolph Road Line	Wheaton station	↔	Rockville		Replaced by Ride On 48 in the late 1990s. Q4 was brought back to service in December, 2009.[80]
Q5, Q9	Glenmont station	↔	Federal Triangle
Q7	Montgomery Village	↔	Federal Triangle
Q8[101] Veirs Mill Road Line	Silver Spring station	↔	Montgomery Mall Congressional Plaza
R3 Greenbelt-Prince George's Plaza Line	Greenbelt Station	↔	Prince George's Plaza Station	Greenbelt Road Metzerott Road	Service discontinued March 27, 2016.[59] Service between Prince George's Plaza station to Fort Totten station ended June 17, 2012, and was replaced by the F6, and R2.[70] See Greenbelt–Fort Totten Line.
R5	Fort McNair	↔	Kennedy Center
R5 Riggs Road Line	Fort Totten station	↔	Calverton	Riggs Road Beltsville Drive Calverton Boulevard	Discontinued June 17, 2012, replaced by R2.[70] See Riggs Road Line
R6, R7 Queens Chapel Road Line	Brookland–CUA station	↔	R6 Lewisdale (Lewisdale Drive & 23rd Avenue) R7 Highview Apartments	Queens Chapel Road	Discontinued on December 11, 1993, and replaced by the R3 and R4.[62] See Queens Chapel Road Line and Riggs Road Line
R7 Riggs Road Line	Fort Totten station	↔	Calverton	Riggs Road Beltsville Drive Calverton Boulevard	Discontinued in 1998 due to safety concerns at the US Army Research Laboratory.[102] Replaced by the R2. See Queens Chapel Road Line and Riggs Road Line
R8, R9 Riggs Road Line	Fort Totten station	↔	Calverton	Riggs Road/ Powder Mill Road Beltsville Drive	R8 originally served Crystal City and then Kennedy Center prior to the 1980s. Discontinued on December 11, 1993, replaced by R1, R2, and R5.[62] See Riggs Road Line
R11 Kenilworth Avenue Line	Deanwood station	↔	Greenbelt station	Kenilworth Avenue River Road Paint Branch Parkway Edmonston Road Greenbelt Road Cherrywood Lane	Discontinued August 23, 2015 and replaced by R12.[64]
R11, R15 Greenbelt–New Carrollton Express Line	New Carrollton station	↔	Greenbelt Center (R11) Beltway Plaza Mall (R15)	Kenilworth Avenue Capital Beltway John Hanson Highway	Discontinued December 11, 1993, when Greenbelt station opened. Replaced by routes R12, T15, T16, and T17.[62]
R13, R14 Kenilworth Avenue Line	Macke Industrial Park Complex	↔	Southwest Washington DC	Kenilworth Avenue	Discontinued on July 18, 1977[103]
S12 Eastover-Marlow Heights Line	Federal Center station	↔	Marlow Heights Shopping Center		Discontinued on January 13, 2001 and replaced by routes D12, and P12.[74]
S95	Mid-Pike Plaza	↔	White Flint station		Discontinued on April 1, 2004.[104]
T1[85][101] Bradley Boulevard Line	Friendship Heights station	↔	Congressional Country Club		Discontinued in 1996 and replaced by Ride On 36
T3[85]		↔
T4, T6 Bethesda-Rockville Line	T4 Bethesda station T6 Friendship Heights station	↔	T4 Medical Center T6 Montgomery College		T4 originally operated between Ivy City/Riggs Rd to Rockshire Village, then Riggs Rd to the N.I.H., then Dupont Circle to Rockshire Village, Bethesda to Twinbrook, then shorten to Medical Center. T6 originally operated between Ivy City/Riggs Rd to Montgomery College, then Dupont Circle to Montgomery College, Riggs Rd to Medical Center, and then Friendship Heights to Rockville then extended back to Montgomery College. Discontinued on December 29, 1991, replaced by Ride On 42 & 46.[105]
T5	Riggs Rd	↔	Alta Vista, Maryland
T7		↔			Discontinued in 1984.[106]
T9 Westboard Shuttle	Friendship Heights station	↔	NIH (Bethesda	Western Avenue Wisconsin Avenue	Discontinued on January 31, 1982.[107]
T10, T11 Central Ave-Belair Line	Addison Road station Capitol Heights station	↔	Kettering, Maryland	Central Ave	Discontinued around the 1990s & replaced by C21, C22, C26, C27, C29. Originally operated to Farragut Square, then Stadium Armory, then Capitol Heights
T12, T14 Bowie-Belair Line	New Carrollton station	↔	Bowie State University	Central Ave	Discontinued around 1995 & replaced by B24, B25 & B27 Route T14 was reincarnated into the Rhode Island Avenue–New Carrollton Line on December 14, 2014.
T15 Greenbelt Line	Greenbelt station	↔	New Carrollton station	Greenbelt Road Cipriano Road Annapolis Road	Discontinued on September 29, 2002 and replaced with a combination of the R12, T16, and T17.[89]
T16, T17 Greenbelt Line	Greenbelt station	↔	New Carrollton station	Greenbelt Road Cipriano Road Annapolis Road	Discontinued on December 19, 2010; replaced by G12, G13, G14 & G16.[68][108] See Greenbelt-New Carrollton Line.
T19[86]	Crofton	↔	New Carrollton station
V11 District Heights Line	Penn Mar Shopping Center	↔	Potomac Avenue station		Discontinued on November 22, 1980, and replaced by the V12, & V14[63]
V11 District Heights–Suitland Line	Addison Road station	↔	Potomac Avenue station	Central Avenue Walker Mill Road	Introduced on December 30, 2001 Discontinued on June 24, 2007, and replaced by the V12[109]
V15 District Heights–Seat Pleasant Line	Penn Mar Shopping Center	↔	Deanwood station	Walker Mill Road Central Avenue Addison Road	Introduced in December, 1998 to replace V14's diversion off of Hill Road onto the intersections of Hastings Drive & Pepper Mill Drive to join Central Avenue when V14 was rerouted to operate straight on Hill Road to join Central Avenue Discontinued on March 27, 2016 & replaced by the V14.[59]
W11, W12 Eastover–Indian Head Highway Line	Federal Center SW station	↔	Federal Triangle		Renamed routes D13 and D14 on January 13, 2001.[74]
W13 Bock Road Line	Farragut Square	↔	Fort Washington Forest (Old Fort Road & Indian Head Highway)	Bock Road South Capitol Street	Discontinued on June 25, 2017, replaced by the W14.[66]
W15 Camp Springs-Indian Head Hwy. Line	Southern Avenue station	↔	Camp Springs (Old Branch Ave & Allentown Way)	Indian Head	Transferred and renamed TheBus 37 on June 21, 2015.[78]
W17 Indian Head Highway Line	Southern Avenue station	↔	Accokeek, Maryland (Livingston Rand & Indian Head Highway)	Livingston Rand Indian Head Highway	Discontinued on December 26, 2004; replaced by Route W13 and W15.[110]
W19 Indian Head Express Line	Indian Head (Pye Street & Greenhow Circle)	↔	Southern Avenue station	Indian Head Highway	Introduced on January 13, 2001.[74] Discontinued on June 25, 2017.[78]
Y1	Montgomery Village	↔	West Potomac Park
Y2, Y4	Silver Spring station	↔	Kensington, Maryland
Y3[111] Homecrest-Wheaton Line	Wheaton station	↔			Originally operated to Southwest Mall
Y4	Rockville	↔	Glenmont station		Discontinued in 1998 and replaced by Ride On route 49.
Y4 Leisure World–Olney Line	Leisure World Clubhouse	↔	MedStar Montgomery Medical Center	Georgia Avenue	This route operated from October 14, 2014 to December 12, 2014 in order to provide service between Leisure World and MedStar Montgomery Hospital. Replaced by routes Y2 and Y8 on December 14, 2014.[81]
Y5[111] Norbeck–Wheaton Line	Wheaton station	↔
Y5, Y9 Georgia Avenue–Maryland Line	MedStar Montgomery Medical Center	↔	Silver Spring station	Georgia Avenue	Discontinued on August 24, 2014, and replaced by Y7 & Y8.[82]
Y6 Georgia Avenue–Maryland Line	Glenmont	↔	Aspen Hill		Renamed Q3 in the 1990s. Originally operated between Silver Spring to Wheaton/Glenmont and then to Wheaton to Glenmont.
Z1, Z4 Glenmont-Silver Spring Line	Glenmont	↔	Silver Spring station	Colesville Road Columbia Pike Georgia Avenue	Z1 originally operated between Silver Spring to Olney via White Oak. Z4 originally operated between Silver Spring to Northwood and then Silver Spring to White Oak. Discontinued on September 26, 2004; replaced by routes C7, Z2, Z6, and Z8.[95][95]
Z3, Z5 Colesville-Fairland Express Line	Burtonsville Park & Ride	↔	Silver Spring station	Colesville Road Columbia Pike Old Columbia Pike	Discontinued on September 26, 2004; replaced by routes Z2, Z6, and Z8.[95][95]
Z6	Four Corners (Marked Franklin via Dale)	↔	Silver Spring station
Z7, Z17 Calverton Express Line	Silver Spring station	↔	Z7 Calverton (Beltsville Drive & Beltsville Road) Z17 Calverton (Centerpark Office Park)	Colesville Road Columbia Pike Beltsville Drive	Discontinued on September 26, 2004; replaced by routes Z6, and Z9.[95][95] Z7 was "reincarnated" as the Laurel-Burtonsville Express Line on March 27, 2016.[59]
Z9, Z29 Laurel–Burtonsville Express Line	Silver Spring station	↔	South Laurel Park & Ride Lot	Colesville Road Columbia Pike Old Columbia Pike	Discontinued on March 27, 2016 & replaced by Z7.[59]
Z13 Greencastle–Briggs Chaney Express Line	Silver Spring station	↔	Greencastle Park & Ride	Colesville Road Columbia Pike	Introduced on December 30, 2001 Discontinued on March 27, 2016 & replaced by Z11.[59]
Z19 Fairland Express Line	Silver Spring station	↔	Fairland (Forcey Memorial Church Parking Lot)	Colesville Road Wayne Avenue Fenton Street Philadelphia Avenue Cedar Street Carroll Street NW/Carroll Avenue Piney Branch Road New Hampshire Avenue Columbia Pike Randolph Road	Discontinued on June 29, 2003.[112]

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