Directions

 

C&O Canal NHP stretches 184.5 miles along the banks of the Potomac River from Georgetown in Washington, DC to Cumberland in western Maryland. Along the way, the park passes through four counties in Maryland: Montgomery, Frederick, Washington, and Allegany.

The park has numerous access points. There is no main entrance. In Washington, DC, the C&O Canal begins at mile 0 in Georgetown near 29th St NW, south of M St, and runs alongside Canal Rd to the west. The entrance to Great Falls Tavern area is at MacArthur Blvd and Falls Rd in Potomac, MD. Park Headquarters and the Cushwa Basin Visitor Center are in Williamsport, MD off I-81 at exit 2. The Cumberland Terminus Visitor Center and mile 184.5 are off I-68 at exit 43C. See the maps page for more.

 

Park Headquarters

142 W. Potomac St.
Williamsport, MD 21795
(301) 739-4200

Visitor Centers

 

Park visitor centers are along the length of the canal. Visitor centers may be closed seasonally, or certain days of the week, so be sure to check their hours before you plan to visit. 

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Looking for something more specific? See Maps.

Last updated: November 15, 2025

Contact Info

Mailing Address:

142 W. Potomac St.
Williamsport, MD 21795

Phone:

301-739-4200

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