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Waldo 100K

Oakridge, United States • 2 Aug 2025

The Waldo 100K Ultramarathon is a demanding race set in Oakridge, Oregon, featuring a 100K loop course that begins at the Willamette Pass Ski Area. Participants will navigate through challenging terrain, including climbs up mountains like Fuji and Maiden Peak, while enjoying stunning views of Waldo Lake. The event is designed for experienced runners, as it includes remote sections and primarily single-track trails. Additionally, the race is part of the Trail to Zero™ program, allowing participants to contribute to carbon offset initiatives. Registration for the event is conducted through a lottery system. Visit the organization's website for the most recent information.

United States Oregon Oakridge

Race information

Website
UTMB 100K
100 km
2890 m+
Waldo 100k
Visit the organization's website for the most recent information.
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