Potomac River Run Marathon (Fall)
Carderock, MD, USA · October 17, 2026
Race Day Weather
52°at start
67° high
Light
Dry
Cool start, steady conditions
Runners will face a temperature rising from 52°F to 66°F, with a mild wind from the WNW at 8 mph. Humidity will average around 60%, creating a comfortable atmosphere. Runners should consider starting conservatively and hydrate regularly, as the warmest part of the race approaches.
Race day forecast available in 83 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.
