C&O Canal Association
- Offers information on events, activities, news, history, and membership details.
- http://www.candocanal.org/

C&O Canal Biking Guide
- Planning your bicycle trip of the C & O Canal.
- http://bikewashington.org/canal/

Chesapeake and Ohio Canal
- History, current news, botanical and biking information, and related links for the 184 mile long C&O Canal Towpath.
- http://www.fred.net/kathy/canal.html

C & O Canal Virtual Tour
- Photographic towpath guide for the C & O Canal. Points of interest such as locks, aqueducts, dams, and mills are featured with a picture, background information, and the mile marker where they are found.
- http://www.mcmullans.org/canal/

Chesapeake & Ohio Canal NHP
- The C&O Canal follows the route of the Potomac River for 184.5 miles from Washington, D.C. to Cumberland, MD. The canal's towpath provides a continuous trail through the spectacular scenery of the Potomac River Valley. National Park Service website.
- http://www.nps.gov/choh/