Grindstone Trail Running FestivalNatural Chimneys Park, VA, United States🇺🇸
19 days to go
- Date
- Sep 17 - 20, Thu - Sun · 18:00
- City
- Natural Chimneys Park, VA, United States
- Deadline
- Sun, Sep 13, 2026
Grindstone Running Festival by UTMB, on national forest land west of Shenandoah Valley; offers a running adventure filled with fall colors, mountain views and challenging terrain. It promises a new goal for every runner with 100 mile, 100K, 50K and 21K options; awards quotas for UTMB World Series Finals.
Courses
| Course | Distance | Elevation Gain | Km-effort |
|---|---|---|---|
| 167.4K | 167.4 km | 6400 m D+ | 231 · XXL |
| 100K | 100 km | 3350 m D+ | 134 · L |
| 50K | 50 km | 1550 m D+ | 66 · S |
| 21K | 21 km | 500 m D+ | 26 · XS |
Calculators for this race
Data sources: UTMB World Series, official site (grindstone.utmb.world) · Last checked:
Data is compiled automatically and may change; check the official source before entering.
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Frequently asked questions
(8)
What is Grindstone Trail Running Festival?
Grindstone Running Festival by UTMB, on national forest land west of Shenandoah Valley; offers a running adventure filled with fall colors, mountain views and challenging terrain. It promises a new goal for every runner with 100 mile, 100K, 50K and 21K options; awards quotas for UTMB World Series Finals.
When is Grindstone Trail Running Festival 2026?
Grindstone Trail Running Festival takes place on Thu, Sep 17, 2026 - Sun, Sep 20, 2026. Start time: 18:00.
Where does Grindstone Trail Running Festival take place?
Grindstone Trail Running Festival takes place in Natural Chimneys Park, VA, United States.
What are the courses and distances of Grindstone Trail Running Festival 2026?
Grindstone Trail Running Festival offers 4 courses: 167.4K (167.4 km, 6400 m D+); 100K (100 km, 3350 m D+); 50K (50 km, 1550 m D+); 21K (21 km, 500 m D+).
How hard is Grindstone Trail Running Festival 2026?
Difficulty is measured in km-effort: distance plus ascent divided by 100. The 167.4K course covers 167.4 km with 6400 m of climbing, which is 231 km-effort and falls in ITRA category XXL. All courses: 167.4K 231 km-effort (XXL), 100K 134 km-effort (L), 50K 66 km-effort (S), 21K 26 km-effort (XS).
Is registration for Grindstone Trail Running Festival 2026 open?
Registration appears to be open; the deadline is Sun, Sep 13, 2026.
When is the registration deadline for Grindstone Trail Running Festival 2026?
The registration deadline for Grindstone Trail Running Festival is Sun, Sep 13, 2026.
What is the official website of Grindstone Trail Running Festival?
Official website: https://grindstone.utmb.world/