Mountain Lakes 100 · Trail
Mountain Lakes 100
Olallie Lake, OR · Sep 19, 2026
Next edition
September
Overview
- Distance
- 100 Mile
- Elevation gain
- 11.7k ft
- Gain / mile
- 117 ft
- Cutoff
- 30 hours
What this race is really like
RaceBound insight
Mountain Lakes 100 is a 100 Mile trail race in Olallie Lake, OR. Total climbing is about 11,700 ft.
Built from official course data
Where it gets hard
Moderate climbing for a mountain 100, but rocky technical sections and overnight running add difficulty.
Editorial summary · not an official race claim and not runner consensus
Terrain
- Terrain
- singletrack, rocky, technical sections, forest, mountain, lakes
Climbing
- Total gain
- 11.7k ft
- Total loss
- 11.7k ft
Crew and pacers
Rules as recorded from the race
- Crew allowed
- Yes
- Pacers allowed
- Yes
Drop bags
- Drop bags allowed
- Yes
Night running
Runners should expect to be on course in the dark.
Entry and registration
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