Events in California›Mammoth LakesTrail Running

UTMB Mammoth Lakes 100m 2026

Organized by mammothlakes.utmb.world

Part of UTMB World Series

Date

Sep 18, 2026 - Sep 20, 2026

Distance

160 km

Elevation

8500 m+

Difficulty

Hard

Registration
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Race facts

  • The course covers 160 km with 8,500 m of elevation gain.
  • It takes place on a Friday, September 18, 2026 — autumn in this part of the world.
  • The closest comparable trail running event is SAR Wild Run in Shaver Lake, 68 km away, on August 9, 2026.

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