Greenbrier River Trail Marathon
Race Day Weather
Cool, light rain, steady winds
Runners will face a steady temperature rise from 52°F to 61°F, with high humidity at 95%. Light rain will persist throughout, making hydration crucial. With max winds at 8 mph, runners will encounter a mix of crosswinds and headwinds, particularly challenging from Miles 2 and 14. It's recommended to maintain a conservative pace, especially during tougher segments, and to stay hydrated.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Greenbrier River Trail Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Race Info
For 2026, both the Marathon and Half Marathon moved to new out-and-back courses starting and finishing in downtown Marlinton, WV, on the scenic Greenbrier River Trail (GRT) in Pocahontas County. Both start on First Avenue in Marlinton before heading onto the trail. The Half Marathon (13.1 miles) turns around at 6.55 miles with about 80 feet of elevation gain. The Marathon (26.2 miles) continues north through Sharp's Tunnel to a turnaround at 13.1 miles, crossing the tunnel twice, with about 160 feet of total elevation gain. Boston Qualifier certification for the new marathon course is in progress.
Race weekend
FAQ
When is the 2026 Greenbrier River Trail Marathon?
Is the Greenbrier River Trail Marathon a Boston Marathon Qualifier?
What is the time limit for the Greenbrier River Trail Marathon?
What will the weather be like for the 2026 Greenbrier River Trail Marathon?
Historical Weather
Temperature History
Range of temperatures during race hours for each year.
Detailed History
| Year | Conditions | Low / High | Rain | Dew Point | Score |
|---|---|---|---|---|---|
2026 | 53°/57° | Light | 54° | ||
2025 | 53°/66° | - | 50° | ||
2024 | 55°/67° | - | 57° | ||
2023 | 39°/44° | - | 32° | ||
2022 | 49°/51° | Light | 49° |