Official Park MapsC&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. Official NPS AppOur mobile app is another great wayfinding option, featuring a map of the hiking trails, overlooks, services, and other points of interest at C&O Canal NHP, as well as all 400+ sites in the National Park Service system. Just remember to download offline content before arriving at the park, as cell reception can be unreliable. Parkwide ResourcesC&O Canal Map Great Falls Hiking Trails (including the Billy Goat Trail)Billy Goat A Trail Hiking Tips Walking GuidesWilliamsport Walking Guide More ResourcesLarge print and detailed maps provide by the National Park Service Cartography Site
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Last updated: September 11, 2025