Waldo 100K Ultramarathon
Saturday, 7 August 2027In 288 days
97733, Cascade Summit, Oregon, United Stateswaldo100k.org (opens in a new tab)
Organised by non-profit Waldo Ultras as a fundraiser for Willamette Pass Ski Patrol. Remote singletrack crosses Fuji Mountain, the Twins and Maiden Peak, with views of Waldo Lake. This is a demanding mountain race rather than a beginner-level ultra.
Distances
- 100 km
- Stated distance
- 04:00
- Start
America/Los_Angeles
Entry fee
2027 entry fee to be announced. Entering the lottery is free.
Rules and terrain
- Course
- Loop
- Surface
- Mountain singletrack trails
Entering
Start
- 100 km·Willamette Pass Resort · Mile Marker 62, OR-58, Cascade Summit, OR 97733
Race day
- Start time
- 04:00 (America/Los_Angeles)
Editions
- 7 Aug 2027
Where this came from
- Sources
- https://waldo100k.org/ (opens in a new tab) (archived 22 Oct 2026 (opens in a new tab)) — organiser schedule and registration, checked 2026-10-16.
- Last verified
- 17 Oct 2026