Baltimore, Maryland / Washington, DC:
MARC commuter rail

Description

Commuter rail service from Washington DC to surrounding areas in Maryland (including Baltimore) is operated by the Maryland Transit Administration of the Maryland Department of Transportation, under the name MARC (MAryland Rail Commuter). There are three routes:

• the Penn Line, which uses Amtrak's Northeast Corridor (the former Pennsylvania Railroad main line) between Washington, Baltimore (Penn Station) and Perryville MD.
• the Camden Line, which uses the CSX route (formerly the Baltimore and Ohio Railroad) between Washington, Laurel and Baltimore (Camden Station).
• the Brunswick Line, which uses the CSX route (formerly Baltimore and Ohio) between Washington, Brunswick MD and Martinsburg WV. A branch line between Brunswick and Frederick MD began operation in December 2001.

On weekdays, trains run about hourly through the morning and afternoon on the Penn Line between Washington and Baltimore. Service is less frequent on the Camden Line. Trains serve only rush-hour commuter traffic (inbound in the morning and outbound in the afternoon) on the Brunswick Line and on the Penn Line between Baltimore and Perryville. There is no service at all on weekends.

• A map of Washington area commuter rail lines, by Michael Calcagno, from New York City Subway Resources