The 2025 event has concluded.

Potomac River Run Marathon (Fall)

Carderock, MD, USA • October 18, 2025

Race Day Weather

partly-cloudy-day
48°
74° high
Breezy
Dry

Cool morning, warm afternoon

Runners will face a temperature rise from 49°F at the start to a warm 74°F by the finish. A light 9 mph wind from the SSE will provide minimal resistance. With an average humidity of 59%, hydration will be key, especially as temperatures climb, necessitating a conservative pacing strategy early on.

partly-cloudy-night7
partly-cloudy-night9
partly-cloudy-day8
partly-cloudy-day9
partly-cloudy-day9
partly-cloudy-day9
partly-cloudy-day9
partly-cloudy-day8
partly-cloudy-day8
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Area Map

Course Map

Course Map Unavailable

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FAQ

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When is the 2025 Potomac River Run Marathon (Fall)?

The 2025 Potomac River Run Marathon (Fall) will be held on Saturday October 18, 2025.

Is the Potomac River Run Marathon (Fall) a Boston Marathon Qualifier?

Yes, the Potomac River Run Marathon (Fall) is an official Boston Marathon qualifier.

Historical Weather

Based on 1 years of data
Avg Temp
73°F
L:43° H:73°
RunScore
8
Conditions
Rain Freq
0%
0 of 1 yrs
Wind3mph
Dew36°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults

2024 Potomac River Run Marathon (Fall)

Clear conditions throughout the day.

2024
clear-day
43°/73°-
8
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