Grindstone 100 Mile2026

18.09 – 20.09.2026Natural Chimneys Park (United States)

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Pacing, fueling and crew sheet for the course you pick

6’400 m D+

167.4 km100mi

1 course

167.4km
6’400 m D+
5’971 m D-
avg 4%
100mi
No index
GPX

Course analysis

100mi167.4 km6’400 m D+

231effort kmⓘ167.4 km on the map · feels like 231 km

D+: 6’400 m
D−: 5’971 m
Max alt.: 1’323 m
Steepest: 24%

Segments

Elevation profile: 100mi

405 m — 1’323 m

Feels like these

Race plan

Plan your race from start to finish.

Pacing, aid stations and fueling timed to your effort on Grindstone 100 Mile, in one roadbook.

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The race

With approximately 21,000’ of vertical gain that includes monster climbs and the solitude of single-track ridge running, the Grindstone 100-mile race is considered by many to be the most incredible ‘hundo’ east of the 100th meridian.

Where to stay

Find a place to stay near Natural Chimneys Park for the race.

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Editions