Washington D.C.Metrobus

Metrobus P21 bus

Previously G12

Greenbelt-New Carrollton

80 % on time

Metrobus P21 bus Stop List and Next Departures

The Metrobus P21 - Greenbelt-New Carrollton bus serves 66 bus stops in the Washington D.C. area departing from New Carrollton Station and ending at Greenbelt / Bay D. Scroll down to see upcoming P21 bus times at each stop and the next scheduled P21 bus times will be displayed. The full P21 bus schedule as well as real-time departures (if available) can be found in the Transit app.

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Stops
Mon, Jul 21, 2025
  • New Carrollton Station11:15 AM
  • Harkins Rd / #790011:16 AM
  • Harkins Rd / W Lanham Dr11:17 AM
  • Harkins Rd / Annapolis Rd11:18 AM
  • Annapolis Rd / W Lanham Dr11:18 AM
  • Annapolis Rd / #799011:19 AM
  • Annapolis Rd / Riverdale Rd11:19 AM
  • Annapolis Rd / 85 Av11:20 AM
  • Annapolis Rd / Princess Garden Pkwy11:21 AM
  • Lanham Severn Rd / Cipriano Rd11:23 AM
  • Annapolis Rd / Princess Garden Pkwy11:24 AM
  • Princess Garden Pkwy / Annapolis Rd11:25 AM
  • Princess Garden Pkwy / City Hall11:25 AM
  • Princess Garden Pkwy / Hickory Hill Av11:26 AM
  • Princess Garden Pkwy / Woodburn Ct11:27 AM
  • Princess Garden Pkwy / #651211:28 AM
  • Princess Garden Pkwy / Tiffany Ln11:28 AM
  • Doctors Hospital Rdwy / Bus Shelter11:29 AM
  • Hanover Pkwy / Green Crescent Ct11:30 AM
  • Hanover Pkwy / Spring Manor Dr11:30 AM
  • Hanover Pkwy / Megan Ln11:31 AM
  • Hanover Pkwy / Village Park Dr11:31 AM
  • Hanover Pkwy / Hunting Rdg11:33 AM
  • Hanover Pkwy / Greenbrook Dr11:33 AM
  • Hanover Pkwy / Hanover Dr11:33 AM
  • Hanover Pkwy / Ora Glen Dr11:34 AM
  • Ora Glen Dr / S Ora Ct11:34 AM
  • Ora Glen Dr / Greenbrook Dr11:35 AM
  • Ora Glen Dr / Morrison Dr11:36 AM
  • Ora Glen Dr / Mandan Rd11:36 AM
  • Mandan Rd / Canning Ter11:37 AM
  • Mandan Rd / #750111:38 AM
  • Mandan Rd / #751611:38 AM
  • Mandan Rd / #764811:39 AM
  • Mandan Rd / Hanover Pkwy11:40 AM
  • Hanover Pkwy / #780011:41 AM
  • Hanover Pkwy / #771611:41 AM
  • Hanover Pkwy / Greenbelt Rd11:43 AM
  • Greenbelt Rd / Greenway Ctr11:44 AM
  • Lakecrest Dr / Lakecrest Cir11:46 AM
  • Lakecrest Dr / Lakeside Dr11:47 AM
  • Lakeside Dr / Westway11:47 AM
  • Westway / Ridge Rd11:48 AM
  • Ridge Rd / 12 Ct11:49 AM
  • Southway / Crescent Rd11:50 AM
  • Crescent Rd / Gardenway11:51 AM
  • Gardenway / Ridge Rd11:51 AM
  • Ridge Rd / Hamilton Pl11:52 AM
  • Ridge Rd / 38 Ct11:52 AM
  • Ridge Rd / Eastway11:52 AM
  • Ridge Rd / Northway11:53 AM
  • Ridge Rd / Plateau Pl11:53 AM
  • Ridge Rd / 58 Ct11:53 AM
  • Ridge Rd / Laurel Hill Rd11:54 AM
  • Ridge Rd / Research Rd11:54 AM
  • Ridge Rd / 73 Ct11:54 AM
  • Lastner Ln / Julien Ct11:55 AM
  • Lastner Ln / Ivy Ln11:56 AM
  • Ivy Ln / Ridge Rd11:56 AM
  • Kenilworth Av / Crescent Rd11:57 AM
  • Ivy Ln / Turner Pl11:58 AM
  • Ivy Ln / #640411:58 AM
  • Ivy Ln / #630111:59 AM
  • Cherrywood Ln / Ivy Ln11:59 AM
  • Greenbelt Metro Dr / Cherrywood Ln12:01 PM
  • Greenbelt / Bay D12:02 PM
  • Metrobus Greenbelt-New Carrollton map

    Metrobus P21 bus route map

    The Metrobus P21 - Greenbelt-New Carrollton bus route map is shown above. The route map shows you an overview of all the stops served by the Metrobus P21 bus to help you plan your trip on Metrobus. Opening the app will allow you to see more detailed information about the route on a map including stop specific alerts, such as stops that have been closed or moved. You can also see the location of vehicles in real-time on the route map so you know when the P21 bus is approaching your stop.

    See the detailed route map

    Metrobus P21 bus Service Alerts

    Open the Transit app to see more information about any active disruptions that may impact the P21 bus schedule, such as detours, moved stops, trip cancellations, major delays, or other service changes to the bus route. The Transit app also allows you to subscribe to receive notifications for any service alert issued by Metrobus so that you can plan your trip around any active or future disruptions.

    See all alerts

    Metrobus P21 bus Service Frequency

    The next P21 bus leaves New Carrollton Station at 11:15 AM, and arrives at Greenbelt / Bay D at 12:02 PM. You can see the frequency of upcoming trips and the exact departure times by opening the Transit app.

    See all departures

    Metrobus P21 bus On-Time Performance

    80 % on time

    80% of riders report that the Metrobus P21 bus arrived on time on their previous trip. In the past 30 days, 31 riders reported on the on-time performance of the P21 bus. Compared to other Metrobus lines, the P21 bus is ranked 12 out of 125 Metrobus lines. These on-time performance stats are user reported and may differ from official Metrobus metrics. See more details about on time, late or early departure reports for the P21 by opening the Transit app.

    See all on-time perfomance details

    Metrobus P21 bus FAQ

    Other Metrobus bus schedules, routes and maps

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