The Waldo 100K Ultramarathon is a challenging 100K loop-type course starting at Willamette Pass Ski Area (70 miles east of Eugene, Oregon) at elevation 5120', climbing up several mountains including Fuji, The Twins, and Maiden Peak before returning to the ski area. The route is mostly single-track trails with some fairly remote sections and has many incredible views of pristine Waldo Lake. It is not a beginner-level ultra and participation in the race should not be taken lightly.

Upcoming Races

Aug 22 2020
100 KM
The race begins and ends at Willamette Pass Ski Area, 70 miles southeast of Eugene, Oregon on Highway 58 at an elevation of 5120′. The course is mostly single-track trail with more than 11,000′ of elevation gain and equal amount of loss. There are 3 major climbs of more than 2000′ each and 2 minor climbs of more than 1000′ each. High point is 7818′ at the top of Maiden Peak. Low point is at Gold Lake, about 4900′. Second half of the course is remote. From the aid station at 37 miles to the finish the course does not cross a road. Dropping out in that section will not make your life much easier. The last 3 aid stations have 1.5, 3.0, and 2.5 mile hikes out on trail, respectively.
11,000 11,000 ft.
Single Loop Course
10 Aid Stations
16 :00 Cutoff
4 Elevation Rating
Very hilly, ~7500-12,500 feet in 50 miles
3 Surface Rating
Some rocks, root, and/or ruts

Results

100 KM View course top times

Date Finishers Top Result Top Result (F)
08/17/19 114 10:03:32 11:22:53
08/18/18 100 10:15:00 11:42:19
08/19/17 109 10:01:05 10:47:56
08/20/16 80 10:38:30 11:53:44
08/22/15 97 9:18:37 10:43:35
08/16/14 107 9:23:28 11:38:41
08/17/13 108 9:05:42 11:07:15
08/18/12 89 9:52:19 11:04:26
08/20/11 95 9:06:51 10:33:24
08/21/10 107 9:25:04 10:52:50
08/22/09 88 9:11:05 10:23:32
08/16/08 83 10:06:54 11:12:36
08/19/07 79 10:50:35 10:48:48
08/20/06 44 11:26:37 11:18:33
08/21/05 38 11:09:54 12:02:35
08/21/04 32 11:15:00 12:13:35
08/16/03 31 11:35:26 13:50:54
09/28/02 15 12:26:57 13:04:04
We try to keep the most accurate information about this race, but changes do happen. Always visit the official race website for the most up to date information.
Tussey Mountainback 50 Miler
  • Oct 27, 2019
  • Boalsburg, PA
50 Miles