. Many are the descendants of
Odd-numbered routes are typically part-time variants of even-numbered routes. Most D.C. and Maryland routes are grouped by their first digit. When this system was laid out in 1936, the following clustering was used:
| Route | Name | Terminals | Major streets | History | Notes |
|---|
| 30; 32; 34; 35; 36 | Pennsylvania Avenue Line | Friendship Heights (Metro) | Potomac Avenue (Metro) (30), Southern Avenue (Metro) (32), or Naylor Road (Metro) (34, 35, 36) | Wisconsin Avenue and Pennsylvania Avenue | See Pennsylvania Avenue Line |
| 42 | Mount Pleasant Line | Mount Pleasant | Gallery Place-Chinatown (Metro) | Mount Pleasant Street, Columbia Road, and Connecticut Avenue | See Mount Pleasant Line |
| 52; 53; 54 | 14th Street Line | Takoma (Metro) | L'Enfant Plaza (Metro) (52, 54) or Bureau of Engraving | 14th Street West | Replaced Route 50 and 54 streetcars (14th Street Line) on January 28, 1962 |
| 60; 64 | Fort Totten-Petworth Line | Fort Totten (Metro) | Georgia Avenue-Petworth (Metro) | Upshur Street (60) or New Hampshire Avenue (64) | Replaced Route 60 streetcars (11th Street Line) on December 3, 1961 |
| 62 | Takoma-Petworth Line | Takoma (Metro) | Georgia Avenue-Petworth (Metro) | Fifth Street West |
| 66; 68 | Petworth-11th Street Line | Georgia Avenue-Petworth (Metro) | Federal Triangle (Metro) | 11th Street West (66) or Sherman Avenue and 13th Street West (68) |
| 70; 71 | Georgia Avenue-7th Street Line | Silver Spring (Metro) | Buzzard Point | Georgia Avenue and Seventh Street West | Replaced Route 70 streetcars (Brightwood Line and Seventh Street Line) on January 3, 1960 |
| 79 | Georgia Avenue Metro Extra Line | Silver Spring (Metro) | Archives-Navy Memorial-Penn Quarter (Metro) | Georgia Avenue and Seventh Street West | Introduced in 2006, first run 19 March 2007[1] |
| 80 | North Capitol Street Line | Fort Totten (Metro) | Kennedy Center | 12th Street East, Michigan Avenue, and North Capitol Street | Streetcars were Route 80 (North Capitol Street Line, Washington Circle to Brookland), Route 82 (Maryland Line, West Potomac Park to Branchville), and Route 84 (Branchville to Beltsville); Routes 80 and 82 replaced by buses on September 7, 1958, and Route 84 on July 31, 1949
Other buses in the corridor, started by Capital Transit, were B4 to New Carrollton, G6 to Calverton, and B6 to Cheverly, eventually renumbered 84, 86, and 88; 88 is now part of Route F8
Original Route 84 eliminated at some point (now served by 86)
Routes 87, 88, and 89 were started by WMATA
When the Green Line opened to Greenbelt on December 11, 1993, most 82 trips were renumbered 83 and extended to Greenbelt, and most 87 and 89 trips were rerouted to Greenbelt[Washington Post, Metro Shuffling Its Bus Schedule, December 9, 1993, page M1] |
| 81; 82; 83; 86 | College Park Line | Cherry Hill Park (81, 83), Mount Rainier (82), or Calverton (86) | Rhode Island Avenue-Brentwood (Metro) | U.S. Route 1 and Rhode Island Avenue | 81 operates Sundays only |
| 84; 85 | Rhode Island Avenue-New Carrollton Line | New Carrollton (Metro) | Rhode Island Avenue-Brentwood (Metro) | Riverdale Road and Rhode Island Avenue |
| 87; 88 | Laurel Express Line | Laurel | Greenbelt (Metro) (87) or New Carrollton (Metro) (88) | Baltimore-Washington Parkway |
| 89; 89M | Laurel Line | Laurel | Greenbelt (Metro) | U.S. Route 1 |
| 90; 92; 93 | U Street-Garfield Line | McLean Gardens | Anacostia (Metro) (90) or Congress Heights (Metro) (92, 93) | Calvert Street, U Street North, Florida Avenue, and Eighth Street East | Replaced Route 90 streetcars (U Street Line and New Jersey Avenue Line) and Route 92 streetcars (U Street Line and Florida Avenue Line) on January 28, 1962
Current Route 90 added and 94 renumbered 93 when Metrorail is not running on December 29, 1991, when Anacostia station opened | Route 93 runs when Metrorail is not operated |
| 94 | Stanton Road Line | Garfield | Anacostia (Metro) | Stanton Road |
| 96; 97 | East Capitol Street-Cardozo Line | Capitol Heights (Metro) | Union Station (Metro) (97) or Duke Ellington Bridge (96) | East Capitol Street, New Jersey Avenue, and U Street North |
| 98 | Adams Morgan-U Street Link | Woodley Park-Zoo/Adams Morgan (Metro) | U Street/African-American Civil War Memorial/Cardozo (Metro) | Calvert Street and U Street North |
| A2; A6; A7; A8; A42; A46; A48 | Anacostia-Congress Heights Line | Southern Avenue (Metro) (A2) or Washington Highlands (A6, A7, A8) | Anacostia (Metro) | MLK Avenue | Routes A42, A46, and A48 added on December 29, 1991, when Anacostia station opened | When Metrorail is closed, A2, A6, and A8 become A42, A46, and A48, and continue to Archives-Navy Memorial-Penn Quarter (Metro) |
| A4; A5 | Anacostia-Fort Drum Line | D.C. Village | Anacostia (Metro) | MLK Avenue |
| A9 | South Capitol Street Line | Washington Highlands | L'Enfant Plaza (Metro) | South Capitol Street |
| B2 | Bladensburg Road-Anacostia Line | Mount Rainier | Anacostia (Metro) | Bladensburg Road and Pennsylvania Avenue Bridge | Extended to Anacostia station on December 29, 1991, when that station opened |
| B8; B9 | Fort Lincoln Shuttle Line | Fort Lincoln | Rhode Island Avenue (Metro) | Rhode Island Avenue |
| C2; C4 | Greenbelt-Twinbrook Line | Wheaton (Metro) (C2) or Twinbrook (Metro) (C4) | Greenbelt (C2) or Prince George's Plaza (Metro) (C4) | University Boulevard |
| C7; C9 | Greenbelt-Glenmont Line | Glenmont (Metro) | Greenbelt (Metro) |
| C8 | College Park-White Flint Line | White Flint (Metro) | College Park-University of Maryland (Metro) | Randolph Road and New Hampshire Avenue |
| D1; D3; D6 | Sibley Hospital-Stadium-Armory Line | Glover Park (D1) or Sibley Hospital (D3, D6) | Ivy City (D1, D3) or Stadium-Armory (Metro) (D6) | MacArthur Boulevard and K Street North |
| D2 | Glover Park-Dupont Circle Line | Glover Park | Dupont Circle (Metro) | Q Street North |
| D4 | Ivy City-Union Station Line | Ivy City | Union Station (Metro) | K Street North |
| D5 | MacArthur Boulevard-Georgetown Line | Little Flower Church, Bethesda | Farragut North/Farragut West (Metro) | MacArthur Boulevard |
| D8 | Hospital Center Line | VA Medical Center | Union Station (Metro) | Mount Olivet Road |
| E2; E3; E4 | Military Road-Crosstown Line | Friendship Heights (Metro) | Ivy City (E2, E3) or Riggs Park | Military Road |
| E6 | Chevy Chase Line | Chevy Chase | Friendship Heights (Metro) | Western Avenue |
| F1; F2 | Chillum Road Line | Takoma (Metro) | Cheverly (Metro) | Chillum Road |
| G2 | P Street-LeDroit Park Line | Georgetown | LeDroit Park | P Street North |
| G8 | Rhode Island Avenue Line | Avondale | Farragut North/Farragut West (Metro) | Monroe Street and Rhode Island Avenue |
| H1 | Brookland-Potomac Park Line | Brookland-CUA (Metro) | West Potomac Park | Michigan Avenue and Columbia Road |
| H2; H3; H4 | Crosstown Line | Van Ness-UDC (Metro) (H2) or Tenleytown-AU (Metro) (H3, H4) | Brookland-CUA (Metro) | Porter Street and Michigan Avenue |
| H6 | Brookland-Fort Lincoln Line | Fort Lincoln | Brookland-CUA (Metro) | Franklin Street |
| H8; H9 | Park Road-Brookland Line | Mount Pleasant (H8) or Petworth (H9) | Rhode Island Avenue-Brentwood (Metro) | Rock Creek Church Road and 12th Street East |
| J1; J2; J3 | Bethesda-Silver Spring Line | Montgomery Mall | Silver Spring (Metro) | Old Georgetown Road and East-West Highway |
| J4 | College Park-Bethesda Line | Bethesda (Metro) | College Park-University of Maryland (Metro) | East-West Highway and University Boulevard |
| J5 | Twinbrook-Silver Spring Line | Twinbrook (Metro) | Silver Spring (Metro) | Rockville Pike and Capital Beltway |
| J7; J9 | I-270 Express Line | Lakeforest Mall | Bethesda (Metro) | Interstate 270 | Route J7 was named J8 until September 26, 2004, when it was changed from express to local[Washington Metropolitan Area Transit Authority, Metrobus service to change the week of September 26, September 2004] |
| K1 | Takoma-Walter Reed Line | Walter Reed Army Medical Center | Takoma (Metro) | Butternut Street | Introduced on March 27, 2005, replacing part of Route K2[Washington Metropolitan Area Transit Authority, Metrobus service route changes in the District of Columbia begin the week of March 27, March 16, 2005] | Security guard boards within Walter Reed, only letting authorized people leave within |
| K2 | Takoma-Fort Totten Line | Takoma (Metro) | Fort Totten (Metro) | North Capitol Street |
| K6 | New Hampshire Avenue-Maryland Line | White Oak | Fort Totten (Metro) | New Hampshire Avenue |
| L1; L2; L4 | Connecticut Avenue Line | Chevy Chase | West Potomac Park (L1), McPherson Square (Metro) (L2), or Dupont Circle (Metro) (L4) | Connecticut Avenue and Calvert Street (L2 only) |
| L7; L8 | Connecticut Avenue-Maryland Line | Wheaton (Metro) (L7) or Aspen Hill (L8) | Friendship Heights (Metro) | Connecticut Avenue |
| M2 | Fairfax Village-Naylor Road Line | Fairfax Village | Naylor Road (Metro) | Southern Avenue |
| M4 | Nebraska Avenue Line | Pinehurst Circle or Sibley Hospital | Tenleytown-AU (Metro) | Nebraska Avenue |
| M6 | Fairfax Village Line | Fairfax Village | Potomac Avenue (Metro) | Pennsylvania Avenue | |
| M8; M9 | Congress Heights Shuttle Line | Washington Highlands | Congress Heights (Metro) | Alabama Avenue | | M8 runs clockwise and M9 counter-clockwise |
| N2; N3; N4; N6 | Massachusetts Avenue Line | Friendship Heights (Metro) | Farragut North/Farragut West (Metro) (N2, N4, N6) or Federal Triangle (Metro) (N3) | Massachusetts Avenue |
| N8 | Van Ness-Wesley Heights Loop Line | Glover Park | Van Ness-UDC (Metro) | Massachusetts Avenue |
| N22 | Navy Yard Shuttle Line | Navy Yard (Metro) | Union Station (Metro) | Pennsylvania Avenue |
| P1; P2; P6 | Anacostia-Eckington Line | Anacostia (Metro) | West Potomac Park (P1), Archives-Navy Memorial-Penn Quarter (Metro) (P2), or Rhode Island Avenue-Brentwood (Metro) (P6) | 11th Street Bridges, Fourth Street West, and New York Avenue (P6 only) | P1, P2, and P4 (the latter on Virginia Avenue, replacing A routes) added on December 29, 1991, when Anacostia station opened;[John R. Butler, Washington Post, At Long Last, Green Line Comes South, January 2, 1992] P4 later became part of P6 |
| Q2 | Veirs Mill Road Line | Shady Grove (Metro) | Silver Spring (Metro) | Veirs Mill Road |
| R1; R2; R5 | Riggs Road Line | Adelphi (R1) or Calverton (R2, R5) | Fort Totten (Metro) | Riggs Road |
| R3 | Greenbelt-Fort Totten Line | Greenbelt (Metro) | Fort Totten (Metro) | Greenbelt Road, Adelphi Road, and East-West Highway |
| R4 | Queens Chapel Road Line | Hyattsville | Brookland-CUA (Metro) | Queens Chapel Road and Michigan Avenue (Washington) |
| S1 | 16th Street-Potomac Park Line | Sixteenth Street Heights | West Potomac Park | 16th Street West |
| S2; S4 | 16th Street Line | Silver Spring (Metro) | Federal Triangle (Metro) | 16th Street West |
| T2 | River Road Line | Rockville (Metro) | Friendship Heights (Metro) | Falls Road and River Road |
| U2 | Minnesota Avenue-Anacostia Line | Minnesota Avenue (Metro) | Anacostia (Metro) | Minnesota Avenue |
| U4 | Sheriff Road-River Terrace Line | River Terrace or Deanwood | Minnesota Avenue (Metro) | Sheriff Road and Benning Road |
| U5; U6 | Mayfair-Marshall Heights Line | Marshall Heights (U5, U6) or Mayfair (U6) | Minnesota Avenue (Metro) | Minnesota Avenue and Texas Avenue |
| U8 | Capitol Heights-Benning Heights Line | Capitol Heights (Metro) or Benning Heights | Minnesota Avenue (Metro) | Nannie Helen Burroughs Avenue and Benning Road |
| V5 | Fairfax Village-L'Enfant Plaza Line | Fairfax Village | L'Enfant Plaza (Metro) | Good Hope Road and 11th Street Bridges |
| V7; V8; V9 | Minnesota Avenue-M Street Line | Deanwood (Metro) (V7, V8) or Benning Heights V9) | Bureau of Engraving (V7, V9) or Archives-Navy Memorial-Penn Quarter (Metro) (V8) | Minnesota Avenue and M Street South | | V7 and V9 run weekdays and V8 weekends |
| W2; W3 | Southeast Community Hospital-Anacostia Line | Southeast Community Hospital | Congress Heights via Anacostia (Metro) | Southern Avenue, Morris Road, and MLK Avenue |
| W4 | Deanwood-Alabama Avenue Line | Capital Plaza or Deanwood (Metro) | Anacostia (Metro) | Division Avenue and Alabama Avenue |
| W6; W8 | Garfield-Anacostia Loop Line | Garfield | Anacostia (Metro) | Good Hope Road, Alabama Avenue, and Stanton Road | | W6 runs clockwise and W8 counterclockwise |
| X1; X3 | Benning Road Line | Minnesota Avenue (Metro) | West Potomac Park (X1) or McLean Gardens (X3) | Benning Road |
| X2 | Benning Road-H Street Line | Minnesota Avenue (Metro) | Lafayette Square | Benning Road and H Street North |
| X8 | Maryland Avenue Line | Carver Terrace | Union Station (Metro) | Maryland Avenue |
| Y5; Y7; Y8; Y9 | Georgia Avenue-Maryland Line | Montgomery General Hospital, Olney | Silver Spring (Metro) | Georgia Avenue | Y5 introduced on September 7, 2003 for Y7 trips that continued to serve Leisure World[Washington Metropolitan Area Transit Authority, Metrobus service route changes in Maryland Begin the Week of Sept. 7, August 21, 2003] |
| Z2 | Colesville-Ashton Line | Olney | Silver Spring (Metro) | New Hampshire Avenue and Colesville Road | Named Colesville Road Line until September 26, 2004 |
| Z6 | Calverton-Westfarm Line | Burtonsville | Silver Spring (Metro) | Old Columbia Pike and Colesville Road | Introduced on September 26, 2004[ as Tanglewood-Westfarm Line. Truncated to Burtsonsville Park and Ride on June 24, 2007] |
| Z8 | Fairland Line | Fairland | Silver Spring (Metro) | Old Columbia Pike and Colesville Road |
| Z9; Z29 | Laurel-Burtonsville Express Line | Laurel | Silver Spring (Metro) | Cherry Lane, Sandy Spring Road, Old Columbia Pike (Z9) or Columbia Pike (Z29), and Colesville Road |
| Route | Name | Terminals | Major streets | History | Notes |
|---|
| A11; A12 | Martin Luther King Jr. Highway Line | Capital Plaza | Federal Triangle (Metro) (A11) or Addison Road-Seat Pleasant (Metro) (A12) | Landover Road and MLK Highway | | A11 has only one trip, southbound early Saturday morning |
| B21; B22 | Bowie State University Line | Bowie State University | New Carrollton (Metro) | Laurel-Bowie Road and John Hanson Highway |
| B24; B25 | Bowie-Belair Line | Bowie | New Carrollton (Metro) | Annapolis Road |
| B27 | Bowie-New Carrollton Line | Bowie State University | New Carrollton (Metro) | Lanham Severn Road |
| B29; B31 | Crofton-New Carrollton Line | Crofton (B29) or Bowie (B31) | New Carrollton (Metro) | Crain Highway (B29 only) and John Hanson Highway |
| B30 | Greenbelt-BWI Airport Express Line | BWI Airport and BWI Business District Light Rail Stop | Greenbelt (Metro) | Baltimore-Washington Parkway |
| C11; C13 | Clinton Line | Clinton | Branch Avenue (Metro) | Branch Avenue |
| C12; C14 | Hillcrest Heights Line | Naylor Road (Metro) | Branch Avenue (Metro) | Branch Avenue |
| C21; C22; C26; C29 | Central Avenue Line | Collington Center, Upper Marlboro (C21, C22), Kettering (C26), or Bowie State University (C29) | Addison Road-Seat Pleasant (Metro) (C21, C22, C29) or Largo Town Center (Metro) (C26) | Central Avenue | | C29 runs weekends; other routes run weekdays |
| C27 | | Six Flags America[Washington Metropolitan Area Transit Authority, Metrobus C27 will serve Six Flags America amusement park, May 18, 2005] | Addison Road-Seat Pleasant (Metro) | | Introduced on May 28, 2005 | Runs during the summer on Saturdays only |
| C28 | Pointer Ridge Line | Pointer Ridge, Bowie | New Carrollton (Metro) | John Hanson Highway |
| D12; D13; D14 | Oxon Hill-Suitland Line | Suitland (Metro) | Southern Avenue (Metro) | Saint Barnabas Road (D12) or Brinkley Road and Indian Head Highway (D13, D14) |
| F12 | Ardwick Industrial Park Shuttle Line | Ardwick | Cheverly (Metro) |
| F13 | Cheverly-Washington Business Park Line | Washington Business Park, Lanham | Cheverly (Metro) | Annapolis Road |
| F14 | Sheriff Road-Capitol Heights Line | New Carrollton (Metro) | Naylor Road (Metro) | MLK Highway and Southern Avenue |
| H11; H12; H13 | Marlow Heights-Temple Hills Line | Temple Hills | Branch Avenue (Metro) | St. Barnabas Road and Branch Avenue |
| J11; J12; J13 | Marlboro Pike Line | Forestville | Addison Road-Seat Pleasant (Metro) (J11, J12) No service to Federal Triangle any more. The J13 goes as far as Potomac Ave Station in one direction. | | J11 and J13 does not serve Federal Triangle any more. As of June 24, 2007 ONLY the J13 goes as fas as Potomac Ave Station. It goes in one direction towards Potomac Ave Station . http://wmata.com/timetables/md/j1115.pdf |
| K11; K12; K13 | Forestville Line | Forestville (K11, K13) or Branch Avenue (Metro) (K12) | Potomac Avenue (Metro) (K11) or Suitland (Metro) (K12, K13) | Allentown Road (K12 only) and Silver Hill Road | | K11 only has one round trip Sunday morning and one thbound trip Saturday morning |
| P12 | Eastover-Addison Road Line | Eastover, Oxon Hill | Addison Road-Seat Pleasant (Metro) | Silver Hill Road |
| P17; P18; P19 | Oxon Hill-Fort Washington Line | Fort Washington | Farragut North/Farragut West (Metro) (P17, P19) or Anacostia (Metro) (P18) | Oxon Hill Road and South Capitol Street |
| R12 | Kenilworth Avenue-New Carrollton Line | Deanwood (Metro) | New Carrollton (Metro) | Kenilworth Avenue and Princess Garden Parkway |
| T16; T17 | Greenbelt Line | Greenbelt (Metro) | New Carrollton (Metro) | Greenbelt Road and Annapolis Road |
| T18 | Annapolis Road Line | New Carrollton (Metro) | Rhode Island Avenue (Metro) | Annapolis Road |
| V12 (V11 has been discontinued as of June 24th, 2007) | District Heights-Suitland Line | Addison Road-Seat Pleasant (Metro) | Suitland Station | Addison Road (No service to Pennsylvania Ave and Potomac Ave Station any more because the V11 has been discontinued as of June 24, 2007 http://wmata.com/timetables/md/V12.pdf) |
| V14; V15 | District Heights-Seat Pleasant Line | District Heights | Deanwood (Metro) | Walker Mill Road, Central Avenue, and Addison Road |
| W13; W14 | Bock Road Line | Fort Washington (W13) or Friendly (W13, W14) | Farragut North/Farragut West (Metro) (W13) or Anacostia (Metro) (W14) | Bock Road and South Capitol Street |
| W15 | Camp Springs-Indian Head Highway Line | Camp Springs | Southern Avenue (Metro) | Allentown Road and Indian Head Highway | Named Indian Head Highway Line until December 26, 2004[Washington Metropolitan Area Transit Authority, Metrobus service changes, effective Sunday, Dec. 26, 2004, December 2004] |
| W19 | Indian Head Express Line | Indian Head | Southern Avenue (Metro) | Indian Head Highway |
| Z11; Z13 | Greencastle-Briggs Chaney Express Line | Greencastle Park and Ride Lot, Fairland | Silver Spring (Metro) | Columbia Pike |
| Route | Name | Terminals | Major streets | History | Notes |
|---|
| 1A; 1B; 1E; 1F; 1Z | Wilson Boulevard Line | Vienna/Fairfax-GMU (Metro) (1A, 1Z), Dunn Loring-Merrifield (Metro) (1B), or Seven Corners (1E, 1F) | Ballston-MU (Metro) | Arlington Boulevard and Wilson Boulevard | | Renamed from "Wilson Boulevard-Fairfax Line" when the western half of route 1C was split from the the line and renamed "Dunn Loring-Fair Oaks Line". The eastern half became the 1A route. |
| 1C | Fair Oaks-Dunn Loring Line | Fair Oaks Mall, or Fairfax Circle | Dunn Loring-Merrifield (Metro) | Arlington Boulevard and Fairfax Boulevard | | Split from the the main "Wilson Boulevard Line." The eastern half was renumbered 1A. |
| 2A; 2B; 2C; 2G | Washington Boulevard Line | Dunn Loring-Merrifield (Metro) (2A), Fair Oaks Mall (2B, 2G), or Tysons Corner Center (2C) | Ballston-MU (Metro) | Lee Highway and Washington Boulevard |
| 2T | Tysons Corner-Dunn Loring Line | Tysons Corner Center | Dunn Loring-Merrifield (Metro) | Chain Bridge Road |
| 2W | Vienna-Oakton Line | Oakton | Vienna/Fairfax-GMU (Metro) | Chain Bridge Road |
| 3A; 3B; 3E | Lee Highway Line | Annandale (3A), West Falls Church-VT/UVA (Metro) (3B), or East Falls Church (Metro) (3E) | Rosslyn (Metro) | Lee Highway |
| 3T | Pimmit Hills Line | Tysons Corner | West Falls Church-VT/UVA (Metro) | Leesburg Pike |
| 3Y | Lee Highway-Farragut Square Line | Lee Heights | McPherson Square (Metro) | Lee Highway and Roosevelt Bridge | Introduced on September 26, 2004 |
| 4A; 4B; 4E; 4H | Pershing Drive-Arlington Boulevard Line | Culmore (4A), Seven Corners (4B, 4H), or Arlington Forest (4E) | Rosslyn (Metro) | Arlington Boulevard and Pershing Drive (4B, 4E only) | | Route 4E is eastbound only |
| 5A | D.C.-Dulles Line | Dulles Airport | L'Enfant Plaza (Metro) | Dulles Toll Road, Interstate 66, and 14th Street Bridge |
| 7A; 7B; 7C; 7D; 7E; 7F; 7H; 7P; 7W; 7X | Lincolnia-North Fairlington Line | Lincolnia (7A, 7F, 7H, 7W, 7X) or North Fairlington (7B, 7C, 7D, 7E, 7P) | Pentagon (Metro) | Shirley Highway |
| 8S; 8W; 8X; 8Z | Foxchase-Seminary Valley Line | Fairlington (8S, 8X, 8Z) or Foxchase (8W) | Pentagon (Metro) | Shirley Highway |
| 9A; 9E | Huntington-Pentagon Line | Huntington (Metro) (9A) or Del Ray (9E) | Pentagon (Metro) | Richmond Highway and Jefferson Davis Highway | Named Richmond Highway Line (along with former Route 9B, which became Hunting Towers-Potomac Yard-Crystal City Line) until June 26, 2005
Once called the Fort Belvoir-Pentagon Line |
| 9S | Crystal City-Potomac Yard Shuttle | Potomac Yard | Crystal City (Metro) | Clark Street and Crystal Drive | Introduced on April 24, 2006 to replace Arlington Transit Route 90[2] |
| 10A; 10E | Hunting Towers-Pentagon Line | Hunting Towers (10A) or Del Ray (10E) | Pentagon (Metro) | Mount Vernon Avenue |
| 10B | Hunting Towers-Ballston Line | Hunting Towers | Ballston-MU (Metro) | Mount Vernon Avenue and Glebe Road | Once called the Alexandria-Arlington-Pentagon Line, along with former Route 10C;[ later the Alexandria-Arlington Line] |
| 11Y | Mount Vernon Express Line | Mount Vernon | Farragut North/Farragut West (Metro) | George Washington Memorial Parkway and 14th Street Bridge |
| 12A; 12E; 12F; 12G | Centreville South Line | Centreville | Vienna/Fairfax-GMU (Metro) | Interstate 66 | Route 12A introduced on June 26, 2005 as a combination of some 12E trips with portions of 12F and 12L; Route 12G introduced as a redesignation and modification of reverse commute 12F trips | Route 12A runs westbound only, leaving I-66 at Fairfax County Parkway |
| 12C; 12D | Centreville North Line | Route 12C was once called the Centreville Express Line |
| 12L; 12M | Little Rocky Run-Vienna Line |
| 12R; 12S | Stringfellow Road-Vienna Line | Named Sully Station-Vienna Line until June 26, 2005 |
| 13A; 13B; 13F; 13G | National Airport-Pentagon-Washington Line | The Pentagon | Downtown | State Route 110 and Roosevelt Bridge or 14th Street Bridge | | 13A (clockwise) and 13B (counterclockwise) run weekdays; 13F (counterclockwise) and 13G (clockwise) run weekends and extend to National Airport |
| 15K; 15L | Chain Bridge Road Line | George Mason University | Rosslyn (Metro) | Chain Bridge Road | | Route 15L runs eastbound only |
| 16A; 16B; 16D; 16E; 16F; 16J | Columbia Pike Line | Annandale (16A, 16B, 16D, 16E) or Culmore (16F, 16J) | Pentagon (Metro) | Columbia Pike | | Routes 16A and 16D run weekdays only. 16B provides service to Annandale only on weekends, as substitute for 16A and 16D. On weekdays, all 16B runs terminate at Culmore. Route 16E runs late night service only, with only the first weeknight and Sunday trips traveling to Annandale. All other 16E trips terminate at Culmore. |
| 16G; 16H; 16K; 16W | Columbia Heights West-Pentagon City Line | Columbia Heights West | Pentagon City (Metro) (16G, 16W), Crystal City (Metro) (16H), or Pentagon (Metro) (16K) | Columbia Pike | Route 16H extended from Pentagon City to Crystal City on September 25, 2005[Washington Metropolitan Area Transit Authority, Metrobus service changes in Virginia begin September 25, September 19, 2005]
Route 16W was called the Shirlington-Pentagon Line until September 7, 2003[Washington Metropolitan Area Transit Authority, Columbia Pike Metrobus service to be restructured, June 19, 2003; Metrobus service route changes along Columbia Pike begin the week of Sept. 7, August 25, 2003]
Route 16G was part of the Columbia Pike Line until September 7, 2003
Routes 16H and 16K were introduced on September 7, 2003 | Route 16K runs weekend mornings only |
| 16L | Annandale-Skyline City-Pentagon Line | Annandale | Pentagon (Metro) | Columbia Pike, Seminary Road, and Shirley Highway | Originally part of the Columbia Pike Line; name changed to the Columbia Pike Express Line on February 1, 1987 |
| 16Y | Columbia Pike-Farragut Square Line | Barcroft | McPherson Square (Metro) | Columbia Pike, Arlington Boulevard and Roosevelt Bridge |
| 17A; 17B; 17F; 17M | Kings Park Line | George Mason University (17A), Burke (17B, 17F), or North Springfield (17M) | Pentagon (Metro) | Braddock Road and Shirley Highway |
| 17G; 17H; 17K; 17L | Kings Park Express Line | George Mason University (17G) or Burke (17H, 17K, 17L) | Pentagon (Metro) | Braddock Road, Capital Beltway, and Shirley Highway |
| 18E; 18F | Springfield Line | Springfield | Pentagon (Metro) | Shirley Highway |
| 18G; 18H; 18J | Orange Hunt Line | Orange Hunt | Pentagon (Metro) | Old Keene Mill Road and Shirley Highway |
| 18P; 18R; 18S | Burke Centre Line | Burke | Pentagon (Metro) | Old Keene Mill Road and Shirley Highway | Routes 18P and 18R were once called the Orange Hunt-Burke Centre Line |
| 20F; 20W; 20X; 20Y | Chantilly-Greenbriar Line | Chantilly | Vienna/Fairfax-GMU (Metro) | Lee Jackson Highway and Interstate 66 |
| 21A; 21B; 21C; 21D; 21F | Landmark-Pentagon Line | Lincolnia | Pentagon (Metro) | Shirley Highway | Once called the Landmark Express Line |
| 22A | Barcroft-South Fairlington Line | Ballston-MU (Metro) | Pentagon (Metro) | George Mason Drive and Shirley Highway | Named Walker Chapel-Pentagon Line until December 29, 2003, when it was restructured[Washington Metropolitan Area Transit Authority, Metrobus Walker Chapel-Pentagon line service restructured to become the Barcroft-South Fairlington line, December 18, 2003] |
| 22B | Pentagon-Army-Navy Drive-Shirley Park Line | Shirley Park | Pentagon (Metro) | Army-Navy Drive |
| 23A; 23C | McLean-Crystal City Line | Tysons Corner (23A) or Langley (23C) | Crystal City (Metro) | Old Dominion Drive and Glebe Road |
| 24P | Ballston-Pentagon Line | Ballston-MU (Metro) | Pentagon (Metro) | Wilson Boulevard and Washington Boulevard |
| 24T | McLean Hamlet-East Falls Church Line | McLean | East Falls Church (Metro) | Westmoreland Street |
| 25A; 25F; 25G; 25J; 25P; 25R | Ballston-Bradlee-Pentagon Line | Ballston-MU (Metro) (25A, 25F, 25J, 25P, 25R) or South Fairlington (25G) | Pentagon (Metro) | Carlin Springs Road, King Street, and Shirley Highway (25A, 25F, 25G, 25J) or Army Navy Drive (25P, 25R) | Once called the Bradlee-Pentagon Line |
| 25B | Landmark-Ballston Line | Ballston-MU (Metro) | Van Dorn Street (Metro) | Carlin Springs Road and Van Dorn Street |
| 26A; 26E | East Falls Church Line
(GEORGE) | West Falls Church-VT/UVA (Metro) (26A) or Falls Church (26E) | East Falls Church (Metro) | Broad Street |
| 26W | West Falls Church Line
(GEORGE) | Falls Church | West Falls Church-VT/UVA (Metro) | Broad Street |
| 28A; 28B | Alexandria-Tysons Corner Line | Tysons Corner | King Street (Metro) | Leesburg Pike |
| 28F; 28G | Skyline City Line | Skyline City | Pentagon (Metro) | Shirley Highway |
| 28T | Tysons Corner-West Falls Church Line | Tysons Corner | West Falls Church-VT/UVA (Metro) | Leesburg Pike |
| 29C; 29E; 29G; 29H; 29X | Annandale Line | Annandale | Pentagon (Metro) | Little River Turnpike, Capital Beltway (29X only), and Shirley Highway |
| 29K; 29N | Alexandria-Fairfax Line | Fairfax | Alexandria | Little River Turnpike |
| 38B | Ballston-Farragut Square Line | Ballston-MU (Metro) | Farragut North/Farragut West (Metro) | Clarendon Boulevard, Wilson Boulevard, and Key Bridge |
| REX | Richmond Highway Express | Fort Belvoir | King Street (Metro) | Richmond Highway | Introduced on September 26, 2004, replacing Route 9A service south of Huntington Metro station |
| TAGS (S80; S91) | Springfield Circulator | Springfield Mall | Franconia-Springfield (Metro) | Frontier Drive | TAGS name essentially replaced numbers on June 26, 2005[Washington Metropolitan Area Transit Authority, Metrobus service changes in Virginia begin June 26, June 17, 2005] |
stations or other local points. They are primarily intended for students, but are open to anyone, and stop at all stops along their routes.
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