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Desert Rats By UTMB 100K is a 100 km ultra trail of Desert Rats By UTMB 2026 in Fruita, United States. The race starts on April 10, 2026.
The course climbs 1891 m+. With 19 m/km of climbing, the course is predominantly runnable. By gradient, 22% of the distance is uphill, 24% downhill and 53% flat. The longest climb runs 2.4 km at an average 8.4% grade (199 m of vertical). The longest descent runs 2.9 km at 5.1% (145 m of vertical). The steepest climb averages 20.2% over 0.3 km. The steepest descent drops at 20.2% over 0.3 km. 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 noticing, none that decides the result.
Historically on race day, start temperatures range from 6°C to 17°C, around 13°C at the highest point; the chance of precipitation is about 26%.
This page has the interactive elevation profile, gradient matrix, pacing and nutrition planner and weather climatology for Desert Rats By UTMB 100K.
Other distances of Desert Rats By UTMB 2026Desert Rats By UTMB 50K (50.0 km)·Desert Rats By UTMB 21K (21.0 km)·Desert Rats By UTMB 10K (10.0 km)
