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Grindstone Trail Running Festival

· Natural Chimneys Park, United StatesCompleted

Grindstone Trail Running Festival, part of the UTMB World Series, is a trail race held in Natural Chimneys Park, United States. The 2026 edition took place on Thursday, 17 September 2026. Distances on offer include 20K, 100 Miles, 100K and 50K.

Grindstone Trail Running Festival: trail race at Natural Chimneys Park, United States

Who it's for

Built for experienced trail running athletes.

DifficultyElite
PrestigeNational
Entry levelNot a first race

Good fit if you…

  • are experienced in trail running and want a hard race
  • want a choice of distances

Maybe not if you…

  • are brand-new to trail running: start with something shorter

What should you know about Grindstone Trail Running Festival?

Date
Thursday, 17 September 2026
Format
20K · 100 Miles · 100K · 50K

Need to know

When is Grindstone Trail Running Festival 2026?

Grindstone Trail Running Festival takes place on Thursday, 17 September 2026. Dates can move year to year, so confirm the exact day on the official race page before you book travel.

Where does Grindstone Trail Running Festival take place?

Natural Chimneys Park, United States

~19.5°C air · ~11.7 km/h wind · 59% rain chance
Part of series
UTMB World Series

FAQs

What do athletes ask about Grindstone Trail Running Festival?

Where is Grindstone Trail Running Festival held?

Grindstone Trail Running Festival is held in Natural Chimneys Park, the United States. The race page has the venue location and a map, and links straight through to the official site for the precise start area.

What distances can you race at Grindstone Trail Running Festival?

Grindstone Trail Running Festival offers 20K, 100 Miles, 100K and 50K. Pick your distance and enter on the official site. Each format usually has its own start wave and cut-offs.

How hard is Grindstone Trail Running Festival?

Grindstone Trail Running Festival is rated elite (5/5) for difficulty on FindMyNextRace, based on its distance, terrain, and the level of the field. Use that as a guide and match it to your current fitness before you commit.

What is the terrain like at Grindstone Trail Running Festival?

Grindstone Trail Running Festival is held on trail terrain. Terrain shapes your pacing, kit, and shoe choice, so factor it into your prep. The official course page has the detailed route.

How do I enter Grindstone Trail Running Festival?

You enter Grindstone Trail Running Festival through the official organiser. Registration is handled on their site, and FindMyNextRace links you straight there. Places for popular editions can sell out early, so register as soon as entry opens.

Is Grindstone Trail Running Festival part of a race series?

Yes, Grindstone Trail Running Festival is part of the UTMB World Series series. Series events often share a qualification, points, or championship pathway, so if you're chasing the series, check how this race fits its calendar.

How should I train for Grindstone Trail Running Festival?

Training for Grindstone Trail Running Festival depends on your target distance and current fitness. Most athletes follow a structured block of 12–20 weeks for a 20K effort. Build a plan tailored to your race date and level with AI Training Plan (https://aitrainingplan.app).

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