Potomac River Run Marathon (Fall)
Carderock, MD, USA · October 17, 2026
Race Day Weather
54°at start
66° high
Breezy
Dry
Cool start, gradual warm-up
Runners will face a temperature rising from 50°F at the start to 66°F by the finish. Wind will be a light SW at 10 mph, with gusts up to 29 mph. With humidity at 59% and dew point at 45°F, conditions are favorable, allowing for a consistent pace without significant adjustments needed.
Race day forecast available in 159 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 66°F and a low of 50°F with a 0% chance of rain.
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