Maryland Transit Administration
6 St. Paul St.
Baltimore, MD 21202-1614
Transit Information Call Center
online: mtamaryland.com 
BWI Marshall Airport offers free, frequent and convenient shuttle service between the MARC/Amtrak station and the BWI Marshall Airport Terminal. Shuttle Service operates 24 hours per day 365 days per year. Shuttles run approximately every 6 minutes except between the hours of 1: 00 am and 5:00 am where service operates every 25 minutes.
At the MARC/Amtrak station, shuttles stop adjacent to the rail station garage, directly across from the rail station. At the BWI Marshall Airport terminal, shuttles stop at each designated airline check-in counter.
The MTA offers a feature known as the MARCTracker which enables passengers to determine the location and status of every operating MARC train. For more information on this new service, log onto www.MARCTracker.com . Customers can also call the MTA Customer Call Center Monday through Friday from 6 a.m. to 7 p.m. at 866-RIDE-MTA or log onto the MTA website .
Listed below is location specific information about MARC Train service. This information is subject to change. To verify the below information or for MARC schedules call 800-325-RAIL or go to www.mtamaryland.com .
From Washington, DC:
Board MARC Trains at Washington's Union Station located at 50 Massachusetts Avenue NE. Hours and information can be found here . The BWI Marshall Rail Station is on MARC's Penn Line.
To contact the Union Station ticket office, please call
From Baltimore City:
You can board MARC trains at Baltimore's Penn Station located at 1500 North Charles Street. Hours and information can be found here . To contact Penn Station, please call 410-291-4165.
From Prince Georges County:
You can board trains on the Penn Line at the following stations in Prince Georges County:
Anne Arundel County/Odenton Station:
You can board the MARC Train at the Odenton Station in Anne Arundel County. The Odenton Station is located at 1400 Odenton Road.
Baltimore County/Martin State Airport Station:
You can board the MARC Train at the Martin State Airport Station in Baltimore County. The train station is located on Eastern Boulevard opposite the airport in Middle River, MD.
You can board trains on the Penn Line at the following stations in Harford County:
You can board trains on the Penn Line at the following station in Cecil County: