Grindstone Running Festival by Utmb

SEP
23-26
2027
Trail festival at Natural Chimneys Park, VA with four distances from 21K to 100M on technical, high-elevation courses and dual qualification.
23-26 Sep 2027
UTMB 20K/50K/100K/100M 167 kilometers 100 kilometers 50 kilometers Half Marathon

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Grindstone Running Festival by UTMB

The Grindstone Running Festival by UTMB is a trail running event scheduled at Natural Chimneys Park, VA, from 23 to 26 September 2027. The courses run across national forest land west of the Shenandoah Valley, including miles through the George Washington and Jefferson National Forest. The routes pass peaks, ridges, valleys, and wooded ridgelines and are timed for peak fall foliage.

Distances and key figures:

  • 100M - 167.4 km; 6400 m+ elevation; 4 Running Stones
  • 100K - 100 km; 3350 m+ elevation; 3 Running Stones
  • 50K - 50 km; 1550 m+ elevation; 2 Running Stones
  • 21K - 21 km; 500 m+ elevation; 1 Running Stone

Organizers describe the terrain as highly technical, with sustained elevation changes and varied trail surfaces through the Appalachian area. The event is a dual qualifier for the UTMB World Series Finals and for the Western States Endurance Run. The race program includes UTMB Community Bibs, with half of the Community Bib registration costs directed to a local charity chosen by the race team. Event materials also note tools for participants to track statistics and Running Stones via a My UTMB account. Visit the organization's website for the most recent information.

167 km
100m
100 km
100k
50 km
50k
Half Marathon
21k

Events nearby

A spring mountain trail event in the Blue Ridge Mountains on March 20, 2027, offering 50 mile, 50k and 25k races on mostly single track and forest roads, with limited entries and cabins at the start finish.
A limited-field trail ultrarun in Jefferson National Forest offering a roughly 60 km course with a 50 km Party Route, three aid stations, and required self-sufficiency.
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