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The Penn Line is a MARC commuter rail service running from Union Station in Washington, D.C., to Perryville, Maryland, via Baltimore's Penn Station on Amtrak's Northeast Corridor. It is MARC's busiest and only electric line. With trains running at speeds of up to 125 miles per hour (201 km/h), it is the fastest commuter line in the United States.[2] The service is operated under contract by Amtrak which supplies employees to operate trains, and maintains the right-of-way and MARC's electric locomotives and passenger cars. The line is administered by MARC, a service of the Maryland Transit Administration (MTA).

Penn Line
MP-36 17 (4861248909).jpg
A Penn Line train at Odenton station
TypeCommuter rail
SystemMARC Train
LocaleWashington, D.C. and Maryland suburbs east; Baltimore, MD and suburbs northeast
TerminiWashington, D.C. Union Station
38°53′51″N 77°00′23″W / 38.8976°N 77.0063°W / 38.8976; -77.0063 (Washington D.C. Union Station)
Perryville, MD
39°33′29″N 76°04′26″W / 39.5581°N 76.0739°W / 39.5581; -76.0739 (Perryville station)
Daily ridership24,267[1]
OwnerAmtrak (tracks)
Operator(s)Amtrak/Maryland Transit Administration
Line length77 mi (124 km)
Track gauge4 ft 8 12 in (1,435 mm) standard gauge
ElectrificationOverhead Catenary
Operating speed125 mph (201 km/h)
Route map

Cecil Transit
AmtrakHarford Transit
Martin State Airport
Martin State Airport
Route 59 (MTA Maryland LocalLink)
Amtrak Baltimore Light Rail
West Baltimore
Maryland Transit Administration
Frederick Road
closed 1984
UMBC Transit.png Route 77 (MTA Maryland)
Baltimore–Washington International Airport
AmtrakBWI Rail Station#Public transit services
Regional Transportation Agency of Central Maryland
Bowie State
Metrobus (Washington, D.C.)
Capital Beltway
New Carrollton
WMATA Metro Logo.svg AmtrakNew Carrollton station
Union Station
Virginia Railway Express WMATA Metro Logo.svg AmtrakWashington Union Station#Services

The Penn Line is the successor to commuter services provided by the Pennsylvania Railroad (PRR), Penn Central, and Conrail dating back as early as 1881. Additionally, Amtrak operated a commuter service named the Chesapeake between 1978–1983.[3] In 1983, Maryland, along with a number of other Northeastern states, took control of its commuter railroads and the "MARC" (Maryland Area Regional Commuter) service name was established.[4] The Penn Line became the replacement for Amtrak's Chesapeake as well as the PRR/Penn Central/Conrail commuter service between Union Station and Baltimore Penn.

Rolling stockEdit

Electric MARC HHP-8 at Odenton station.

The Penn Line uses diesel as well as electric locomotives for powering trains. Most electric and rush hour diesel trains are 6-8 cars long, and are primarily made up of Kawasaki bi-levels. During the day, shorter 4-6 car MultiLevels or single level diesel trains from the Brunswick and Camden lines are used on the Penn Line. For the spring and summer months, weekend Penn Line trains also include a single-level Bike Car that is specially equipped to accommodate bicyclists.[5]

All trains are operated in push-pull configuration with the cab-car end towards Washington.

All of the stations from Washington Union Station up to Halethorpe have high-level platforms, and all of the subsequent stations from West Baltimore up to Perryville, with the exception of Penn Station, have low-level platforms. This precludes the use of MARC's ex-Metra low-level boarding gallery railroad cars on the Penn Line.


MARC runs 58 Penn Line trains during a normal weekday. A majority of these trains (39 each day) originate/terminate between Union Station in Washington and Baltimore in Baltimore. An additional 11 trains originate/terminate between Union Station and Perryville, MD, and another 5 originate/terminate between Union Station and Martin State Airport. A single morning train and a single evening train run between Perryville and Penn Station, and a single early morning train runs from Martin State Airport to Penn Station.[6] Unlike MARC's other two lines, the Penn Line operates all throughout the day and well into the night.

On December 7, 2013 the Penn Line also began offering limited weekend service.[7] Penn Line weekend service consists of 9 round trips on Saturday and 6 round trips on Sunday—primarily between Penn Station and Union Station. Several trains extend service to Martin State Airport, and all trains skip Seabrook.[5]

Beginning on December 13, 2014 a separate Bike Car was added to some weekend Penn Line trains.[8] Bike Cars are reconditioned Sumitomo/Nippon Sharyo MARC IIA single-level commuter railcars. One side of each car's interior is lined with bicycle racks which are arranged to secure 23 full-sized, non-collapsible bicycles, and the other side provides seating for 40 passengers.[9] The Bike Car program was expanded during 2015 to include all weekend trains.[9] There is no extra charge for using the Bike Car, which is available on a first-come, first-served basis. Beginning in 2016, MARC began installing bike racks on its bi-level train cars and some of its single-level cars. Weekday service was intended to begin in summer 2018, however, this was delayed several times. Eventually, 35 Penn Line railcars had full-sized bicycle racks installed, and weekday use of the bike racks on the MARC Penn line officially began on January 21, 2019.[10] These railcars are available on most weekday rush-hour Penn Line trains and on all weekend trains. As with the former Bike Cars, these services are first-come, first served with no additional charge, and the bicyclist must make sure to be able to access the platform of the station they desire.

Amtrak's Acela Express, Northeast Regional, and long distance trains share tracks along the whole of the Penn Line, and share stations at Aberdeen, Baltimore, BWI Airport, New Carrollton, and Union Station. MARC passengers with monthly and weekly tickets can ride select Amtrak Northeast Regional trains during the week only, as part of their cross-honoring agreement.[6] Connections are also available to the Washington Metro's Orange Line at New Carrollton, Red Line at Washington Union Station, and to the MTA Light Rail at Baltimore Penn Station.[6]

The MTA has plans to extend the Penn Line to Newark station in Delaware to connect with the Wilmington/Newark Line of SEPTA or even further north to 30th Street Station in Philadelphia. Currently,[when?] the MTA funds a local bus connection between Newark and Baltimore with a transfer at Elkton station.[11] Longer-term plans include construction of new track and extending the line past Washington Union Station to L'Enfant Plaza station and into northern Virginia.[11] The planned Purple Line that will connect all three MARC lines will connect with the Penn Line at New Carrollton.


The following stations are served by Penn Line trains; not all trains stop at all stations.

State Town/City Station Connections
DC Washington Union Station   Amtrak: Acela Express, Capitol Limited, Cardinal, Carolinian, Crescent, Northeast Regional, Palmetto, Silver Meteor, Silver Star, Vermonter, Thruway Motorcoach to Charlottesville, Virginia
  MARC: Brunswick Line, Camden Line
  Metrorail: Red Line
  Metrobus, Loudoun, OmniRide
  VRE: Manassas Line, Fredericksburg Line
  MTA Commuter Bus: 915, 929
MD New Carrollton New Carrollton   Amtrak: Northeast Regional, Vermonter
  Metrorail: Orange Line
  Metrobus: 87, B21, B22, B24, B27, B29, C28, F4, F6, F12, F13, F14, G12, G14, T14, T18
  Prince George's "TheBus": 15X, 16, 21, 21X
Seabrook Seabrook
Bowie Bowie State Bowie State University
Odenton Odenton   Anne Arundel County 202 Bus
Linthicum Heights BWI Airport   Amtrak: Acela Express, Northeast Regional, Vermonter
  Baltimore Light RailLink via BWI Marshall Airport Shuttle (see BWI Marshall Airport station)
  BWI Airport via BWI Marshall Airport Shuttle
  MTA Maryland: 17, 99, 201
  Howard Transit Silver
Halethorpe Halethorpe   MTA Maryland: 77
  University of Maryland, Baltimore County Halethorpe Line
Baltimore West Baltimore   MTA Maryland: 23, 40, 47, 51 (1 block east)
Baltimore   Amtrak: Acela Express, Cardinal, Carolinian, Crescent, Northeast Regional, Palmetto, Silver Meteor, Silver Star, Vermonter
  MTA Maryland: 3, 11, 61, 64
  Baltimore Light RailLink: Penn/Camden Shuttle
  Charm City Circulator: Purple Route
Middle River Martin State Airport   Martin State Airport
  MTA Maryland: 24, 160
Edgewood Edgewood
Aberdeen Aberdeen   Amtrak: Northeast Regional
  Harford Transit: 1, 1A, 4, 6, and 6A
Perryville Perryville   Cecil Transit: 2, 5


  1. ^ "MTA Average Weekday Ridership - by Month". Maryland Open Data Portal. June 2017. Retrieved June 2, 2019.
  2. ^ Van Hattem, Matt (June 30, 2006). "Maryland Rail Commuter (MARC)". Trains Magazine. Retrieved February 16, 2010.
  3. ^ "1979 Amtrak Chesapeake timetable".
  4. ^ "MARC History". MTA. Archived from the original on January 17, 2010. Cite uses deprecated parameter |dead-url= (help)
  5. ^ a b "MARC Penn Line Weekend Schedule" (PDF). MTA Maryland. March 2019. Retrieved May 10, 2019.
  6. ^ a b c "MARC Penn Line Weekday Schedule" (PDF). MTA Maryland. March 2019. Retrieved May 10, 2019.
  7. ^ Sherman, Natalie; Wenger, Yvonne (December 7, 2013). "MARC train weekend service begins". The Baltimore Sun. Retrieved December 6, 2015.
  8. ^ Rector, Kevin (December 12, 2014). "MTA to introduce bike car to weekend MARC service". The Baltimore Sun. Retrieved December 6, 2015.
  9. ^ a b "MTA Rolls Out Bike Cars on All Weekend MARC Penn Line Trains". Mass Transit. 2015. Retrieved June 28, 2019.
  10. ^ "MARC Penn Line Riders Can Now Bring Full-Size Bicycles On Most Rush-Hour Weekday Trains" (Press release). MTA Maryland. February 19, 2019. Retrieved June 28, 2019.
  11. ^ a b "MARC Riders Advisory Council Meeting Summary Minutes" (PDF). MTA Maryland. January 18, 2018. Retrieved June 2, 2019.

External linksEdit

Route map:

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