Potomac River Run Marathon (Fall) Half Marathon
Race Day Weather
Comfortable temps, moderate wind, rain likely
Mild 54°F temps at gun time mean comfortable early miles without overheating risk. Moderate winds around 19mph may affect pacing on open sections of the course. Rain is likely — waterproof your phone and bib, and consider a disposable poncho for the corral.
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Race Info
The Potomac River Run Half Marathon is a 13.1-mile out-and-back on the C&O Canal Towpath in Washington, DC, starting and finishing at Fletcher's Cove. Runners head upstream 6.55 miles to Towpath mile 9.65, turn around and come back along the same trail, passing under Chain Bridge and by several of the canal's locks. The surface is flat, packed gravel and dirt beside the Potomac River, with only short stretches of wooden footbridge and concrete. The course is USATF-certified.
