Potomac River Run Marathon

MAY
2
2026
Experience a flat and scenic out and back race on the historic C&O Canal Towpath. Enjoy a tree lined course along the Potomac River with full marathon and half marathon distances available for runners and walkers.
Marathon Half Marathon

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23rd Annual Potomac River Run Marathon & Half

The Potomac River Run Marathon & Half takes place at Fletcher's Cove on the C&O Canal Towpath in Washington, DC. This event follows an out-and-back course that is USATF certified. The path is 99% crushed gravel and features a flat profile with no hills, no pavement except for two small sections, and no cross streets.

Participants run through a tree-lined and shaded environment with views of the Potomac River. The course elevation ranges from a low of 12 meters to a high of 44 meters above sea level. Historical displays regarding the C&O Canal are available to view at the venue.

The following distances are available:

  • Full Marathon
  • Half Marathon

Aid stations are located along the course at Lock 10, Lock 7, and Lock 6. These stations close sequentially as the final participants pass. Runners and walkers are welcome to participate.

Packet pick-up is organized on the days leading up to the race at locations in Falls Church and Arlington, with a final session available on-site on race morning. Organized transport via cab service and a pre-race dinner are available as optional additions. Due to limited parking at Fletcher's Cove, off-site parking options are provided at nearby schools, libraries, and businesses. Visit the organization's website for the most recent information.

Marathon
Full Marathon
Half Marathon
Half Marathon