The recently expanded Baltimore-Washington International (BWI) Airport, located just 10 miles from downtown Baltimore, is one of the fastest-growing major airports in the country. BWI has 18 carriers that provide more than 600 daily flights, including nonstop flights to 72 cities in the United States, Canada, Europe and the Caribbean.
Major highway links between Baltimore and other cities are Interstate-95, which runs all along the East Coast, and I-70, which crosses through western Maryland to the Midwest. Interstate 395 runs south from Baltimore to Washington and Virginia; I-83 runs north through the city toward central Pennsylvania. All these interstates intersect with I-695, the Baltimore Beltway, which circles the city. Those approaching the central city by car should be aware that most of the streets are one way.
Just north of downtown is the historical, restored Pennsylvania Station, where Amtrak trains pull in and out. For commuters, the Maryland Rail Commuter Service (MARC) provides weekday service on the most extensive track commuter rail system in the Greater Baltimore region, including 43 stations over three lines (Brunswick, Camden and Penn) covering a total of 187 miles. Twenty trains run from the Maryland/Delaware border, south to Montgomery County, MD. MARC also provides convenient access to both downtown Baltimore and Washington, D.C.
Baltimore's highly regarded mass transit system consists of 850 buses, the Metro (subway), light rail, and the Maryland Area Rail Commuter system (MARC). The Metro's 15.5 mile system extends from the Owings Mills corporate and shopping complex in Baltimore County, through the heart of the downtown business, shopping and sightseeing districts to Johns Hopkins Hospital.