Potomac River Run Marathon (Fall)
Carderock, MD, USA · October 17, 2026
Race Day Weather
52°at start
67° high
Light
Dry
Comfortable conditions, steady pace
Runners will face temperatures rising from 52°F at the start to a peak of 66°F. With a light wind from the WNW at 8 mph, humidity is moderate at 60%. Runners should maintain a steady pace and stay hydrated, as conditions are favorable for performance.
Race day forecast available in 70 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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