Desert Rats By UTMB 100K is the 100km ultra trail at Desert Rats By UTMB 2026 (Fruita, United States). The race starts on April 10, 2026.
The course climbs 1891m+. With 19m/km of climbing, the course is predominantly runnable. By gradient, 22% of the distance is uphill, 25% downhill and 53% flat. Surface: 70% trail, 23% smooth, and 6% technical. Flat-equivalent effort: 115.0 FlatKM.
The course is runnable enough that trekking poles are not needed.
Quad damage risk is low (index 19 of 100): a few descents worth noting, none of them decisive.
On race day, start temperatures have historically ranged from 6°C to 17°C, with around 13°C at the highest point; the chance of precipitation is about 26%.
234 finishers completed the 2026 edition. Men's winner: Spencer Shellberg (United States) in 8:19:29. Women's winner: Heather Jackson (United States) in 9:45:12.
This page has the full results and splits, a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for Desert Rats By UTMB 100K.
Other distances of Desert Rats By UTMB 2026Desert Rats By UTMB 50K (50.0km)·Desert Rats By UTMB 21K (21.0km)·Desert Rats By UTMB 10K (10.0km)
Other editions of Desert Rats By UTMB 100K2027
