Operating Hours & Seasons

C&O Canal Lock 19 with a layer of snow and ice

NPS Photo / Steve Dean

The Potomac Heritage National Scenic Trail is a braided network of locally managed trails. Operating Hours and Seasons are dependent on the partner, agency, or organization responsible for each section of the Trail. Please check with the trail management partner before you head out.

The Big Savage Tunnel on the Great Allegheny Passage is closed seasonally from December through March. Exact dates may vary.

Last updated: November 13, 2025

Contact Info

Mailing Address:

Potomac Heritage National Scenic Trail
c/o Chesapeake and Ohio Canal National Historical Park
142 W. Potomac St.
Williamsport, MD 21795

Phone:

301-739-4200
This phone number will connect you to the C&O Canal National Historical Park's mainline.

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