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Desert Rats By UTMB
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Desert Rats By UTMB 21K

UTMB World Series
21.0km·470m+
April 10
Fruita,
United States
itra

· ·

Other races in United States

  • October 3, 2026 · 24.2 km · 596 m+
  • November 14, 2026 · 30.0 km · 527 m+
  • November 14, 2026 · 15.0 km · 284 m+
  • November 14, 2026 · 50.0 km · 855 m+
  • October 3, 2026 · 56.4 km · 2377 m+
  • November 14, 2026 · 80.5 km · 1492 m+

Read

  • Hill Training for Trail Runners: Train the Descents
  • Downhill Running Muscle Damage: Why Descents Wreck Quads
  • How to Stop Muscle Cramps While Running

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Full calendar: United States

Desert Rats By UTMB 21K — Race Profile

Distance
21.0 km
Gain
470 m+
FlatKM
24.7
Max
1642 m
Min
1364 m

About Desert Rats By UTMB 21K

Desert Rats By UTMB 21K is a 21.0 km trail race of Desert Rats By UTMB 2026 in Fruita, United States. The race starts on April 10, 2026.

Course

The course climbs 470 m+. With 22 m/km of climbing, the course is predominantly runnable. By gradient, 33% of the distance is uphill, 37% downhill and 30% flat. The longest climb runs 1.4 km at an average 8.0% grade (111 m of vertical). The longest descent runs 2.4 km at 8.4% (199 m of vertical). The steepest climb averages 11.4% over 0.3 km. The steepest descent drops at 14.3% over 0.4 km. Surface: 82% trail. Flat-equivalent effort: 24.7 FlatKM.

Poles

The course is runnable enough that trekking poles are not needed.

Quad damage

Quad damage risk is low (index 8 of 100): a few descents worth noticing, none that decides the result.

  • Control on the marked descents until km 11, target pace until km 17, free after that. Short descents not listed: target pace.

Weather

Historically on race day, start temperatures range from 6°C to 17°C, around 15°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 21K.

Other distances of Desert Rats By UTMB 2026Desert Rats By UTMB 100K (100 km)·Desert Rats By UTMB 50K (50.0 km)·Desert Rats By UTMB 10K (10.0 km)