Greenbrier River Trail Marathon

Cass, WV, USAOctober 04, 2026
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Race Day Weather

partly-cloudy-day
52°
69° high
Light
Dry

Cool start, warming trend ahead

Runners will face a temperature increase from 52°F to 69°F, with average humidity at 68%. Winds will be light at 6 mph from the SSW, but gusts may reach 20 mph. As conditions warm, it's advisable for runners to adjust their pace and hydrate frequently, especially as they approach the warmer temperatures.

Race day forecast available in 191 days
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A one of a kind race, in the State of West Virginia: A point-to-point full marathon (26.2 miles) on a flat/slightly downhill (1% grade) course and the official inaugural half-marathon (13.1 miles - out-and-back course) on the scenic Greenbrier River Trail (GRT) in Pocahontas County, WV. The Marathon starts in Cass Scenic Railroad State Park and runs south on the trail, finishing at Stillwell Park, in Marlinton, WV. USATF-certified Course! Whereas, the Half Marathon (not-certified) will start and finish at Stillwell Park in Marlinton. The Half Marathon will exit Stillwell Park, turning right onto the trail, heading south; hitting the turnaround at 6.55 miles and heading back to finish at Stillwell. Source

Area Map

Course Map

FAQ

When is the 2026 Greenbrier River Trail Marathon?

The 2026 Greenbrier River Trail Marathon will be held on Sunday October 4, 2026.

Is the Greenbrier River Trail Marathon a Boston Marathon Qualifier?

Yes, the Greenbrier River Trail Marathon is an official Boston Marathon qualifier.

What is the time limit for the Greenbrier River Trail Marathon?

The time limit for the Greenbrier River Trail Marathon is 8 hours.

Historical Weather

Based on 4 years of data
Avg Temp
63°F
L:48° H:63°
RunScore
8
Conditions
Rain Freq
25%
1 of 4 yrs
Wind8mph
Dew45°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore
2025
partly-cloudy-day
50°/77°-
8
2024
cloudy
52°/77°-
8
2023
partly-cloudy-day
39°/47°-
7
2022
rain
51°/52°Light
8