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Waldo 100K

Oakridge, United States • 2 Aug 2025

The Waldo 100K Ultramarathon is a challenging race set in the scenic Willamette Pass, Oakridge, Oregon. This 100K loop course features a mix of single-track trails and remote sections, offering stunning views of Waldo Lake and the surrounding mountains, including Fuji and Maiden Peak. Designed for experienced runners, the event takes place on the first Saturday in August, with a single start time. Participants must complete the race within 18 hours to earn a finisher's hat and qualify for the Western States race. The event also supports sustainability through the Trail to Zero™ carbon offset program. 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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