Mountain Lakes 100
September 19th 2026
Olallie Lake, OR
100 Miles
One of the country’s most beautiful 100 mile races starts and finishes at Olallie Lake. This race features the best trail running Oregon has to offer, technical and rocky sections, views of mountain peaks in every direction, and 60 miles of luscious sections of the Pacific Crest Trail. You run past dozens of mountain lakes and are surrounded by shocking oranges, reds, and yellows with all the Fall foliage.
You'll be treated like never before at the aid stations. The volunteers are committed to getting you to the finish line. It really is the most supportive 100-miler in Oregon.
There is a pasta feed the night before the race and breakfast is served Sunday morning.
Upcoming Races
Sep 19 2026
100 Miles
11,742
11,742
ft.
Out and Back
16 Aid
Stations
30:00 Cutoff
3
Elevation Rating
Hilly, ~2500-7500 feet in 50 miles
3
Surface Rating
Some rocks, root, and/or ruts
Results
100 Miles
| Date | Finishers | Top Result (F) | Top Result (M) | Top Result (X) |
|---|---|---|---|---|
| 09/20/25 | 80 | 22:13:16 | 16:04:09 | 21:14:17 |
| 09/21/24 | 93 | 19:45:37 | 17:15:18 | 28:21:51 |
| 09/16/23 | 86 | 20:30:44 | 18:49:28 | 29:45:23 |
| 09/19/20 | Race Cancelled | |||
| 09/21/19 | 121 | 20:27:41 | 17:26:49 | |
| 09/22/18 | 121 | 20:33:04 | 17:15:16 | |
| 09/23/17 | 81 | 23:39:05 | 19:14:14 | |
| 09/24/16 | 108 | 21:11:13 | 16:32:40 | |
| 09/26/15 | 78 | 19:59:50 | 16:15:16 | |
| 09/27/14 | 64 | 16:24:11 | 16:16:32 | |