Potomac River Run Marathon (Fall)
Carderock, MD, USA · October 17, 2026
Race Day Weather
52°at start
67° high
Light
Dry
Comfortable temps, warming through the race
Mild 52°F temps at gun time mean comfortable early miles without overheating risk. Temperatures rising to 67°F through the course will gradually increase perceived effort in the second half. Light winds shouldn't be a major factor for pacing.
Race day forecast available in 81 days
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FAQ
When is the 2026 Potomac River Run Marathon (Fall)?
The 2026 Potomac River Run Marathon (Fall) will be held on Saturday October 17, 2026.
Is the Potomac River Run Marathon (Fall) a Boston Marathon Qualifier?
Yes, the Potomac River Run Marathon (Fall) is an official Boston Marathon qualifier.
What will the weather be like for the 2026 Potomac River Run Marathon (Fall)?
The forecast calls for a high of 70°F and a low of 52°F with a 7% chance of rain.
