Skip to content
Endurance AnalyticsEndurance Analytics
  • Calendar
  • Trail Finder
  • Geo Quiz
  • Challenges
  • Blog
Trail runningBiathlonSkiingSkimoOlympicsCalendarTrail FinderGPX AnalyzerRace Pace CalculatorChallengesComparePricingConnect AIBlog

Know the course before you run it

© 2026 Endurance Analytics. All rights reserved.

Privacy policyTerms of serviceRefundsContact
  1. Home
  3. Trail running
  5. 2026
  7. UTMB World Series
  9. Grindstone Trail Running Festival by UTMB

Grindstone Trail Running Festival by UTMB 2026

Swoope, United States · September 17 – 20, 2026

Grindstone Trail Running Festival by UTMB 2026 (Swoope, United States) is a trail running event held on September 17 – 20, 2026, with 3 races: Grindstone 100M (169km), Grindstone 100K (105km), and Grindstone 50K (52.0km).

Official websitegrindstone.utmb.world

Races and distances

RaceDistanceD+ / D−StartStatus
Grindstone 100M169km5532m+September 18, 06:00 PMResults
Grindstone 100K105km2928m+September 19, 06:00 AMResults
Grindstone 50K52.0km1367m+September 19, 07:00 AMResults

Other editions of Grindstone Trail Running Festival by UTMB2025