Grindstone Trail Running Festival by UTMB
Warren County, Virginia, United States
Sep 17-20, 2026 - Thursday to Sunday
100k, 100mi, Half-marathon, Ultra
Race Information
Feed your sense of adventure and join the Grindstone Running Festival by UTMB. This one-of-a-kind event takes you through acres of national forest in the Shenandoah Valley on an iconic running adventure complete with stunning fall foliage, mountain views, and demanding terrain. With a 100M, 100K, and 21K, there's a new challenge for every runner. Join this feat to push your endurance, get gritty, earn your stones, and qualify for the iconic UTMB® World Series Finals.
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Grindstone Trail Running Festival by UTMB
Date: Sep 17, 2026 - Thursday
Size: 100 - 500 participants
Location: Warren County, Virginia
👍 Run Pick of the Month: Frederick Running Festival
📍Frederick Fairgrounds - Frederick, MD - May 2 & 3, 2026
💸 Exclusive $15 Off! Use Code: Run26Guide
Why We Like This Run:
✅ Free Parking, Free Beer & Live Music
✅ Fun, Flat & Scenic Course
✅ Run Both Days for Added SWAG
Get It All at the Frederick Running Festival. A longtime community favorite of more than 20 years and just outside Washington, D.C., the Frederick Running Festival delivers big-race energy with small-town charm. With four race options finishing at the Frederick Fairgrounds, this weekend is built for runners who want the full experience.
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Race Facts
Race Size: 100 - 500
Elevation: Lots of Hills
Course Type: Trail
Boston Qualifier: No
Kids Run: No
Where to Stay
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