Potomac River Run Marathon (Fall)
Carderock, MD, USA · October 17, 2026
Race Day Weather
52°at start
67° high
Light
Dry
Cool morning, gradual warming
Runners will face temperatures starting at 52°F and rising to 66°F by the finish. Winds will be light at 8 mph from the WNW, with occasional gusts up to 23 mph. With humidity around 60%, it's crucial for runners to stay hydrated and consider adjusting their pace as temperatures increase.
Race day forecast available in 50 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.
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