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Oregon · Olallie Lake
Mountain Lakes
Sep 19, 2026WS
Qualifier status per the 2026 lists
Mountain Lakes 100 debuted in 2013 — the inaugural race was halted by a typhoon before any runner finished — and completed its first full edition in 2014. The course starts at Olallie Lake and runs south on the Pacific Crest Trail through the Oregon Cascades past 25-plus alpine lakes, with 11,700 feet of gain on technical, rocky single-track between Mt. Jefferson and Mt. Hood. The field caps at 150; all entrants must log 8 hours of trail work before race day. A Western States qualifier with a 30-hour cutoff; in 2025, 80 of 151 starters finished.
The numbers
Race statistics
- Distance
- 100 mi
- Vertical gain
- 13,000 ft
- Course
- Loop
- Unique miles
- 63 mi
- Entry fee
- $390
- Lottery
- Yes
- Sub-24 hr
- 50%
- Avg finishers
- 87
130 ft / mi
1 mi loop
Draw ~Jan 9, 2026
of finishers
per year
◈ From the runners