Not announced
Completed
Race Calendar / Ultra running
Grindstone Trail Running Festival by UTMB
Grindstone Trail Running Festival by UTMB 2026: 17 September 2026 · 21K, 50K, 100K, 100M · Race completed. View the course, registration and official race…
17 September2026
TBALocation
21K, 50K, 100K, 100MDistances
CompletedCompleted
Race overviewWhat to know
What to know
before entering.
Grindstone Trail Running Festival by UTMB 2026: 17 September 2026 · 21K, 50K, 100K, 100M · Race completed. View the course, registration and official race…
Quick facts
01Ultra running
02Trail and natural surfaces
03Not rated
04Course profile to be announced
Registration detailsVerify the
Verify the
source page.
Organizer information, programme and registration rules can change. Confirm the latest details with the race organizer before entering.
Not announced
Confirm availability on the registration page.
24 August 2026
Information may have changed after this date.
Prepare with
a personal plan.
Turn the race date, terrain and distance into a realistic training process.