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Waldo 100K

Oakridge, United States • 2 Aug 2025

The Waldo 100K Ultramarathon is a demanding 100-kilometer loop trail race held at Willamette Pass Ski Area near Oakridge, Oregon. Starting at an elevation of 5,120 feet, the course ascends several mountains including Fuji, The Twins, and Maiden Peak, offering runners stunning views of the pristine Waldo Lake. The route primarily consists of single-track trails with some remote sections, making it suitable for experienced ultrarunners rather than beginners. The event emphasizes environmental responsibility through participation in the Trail to Zero™ carbon offset program, encouraging runners to mitigate their travel-related carbon footprint. The race is known for its challenging terrain and scenic beauty. 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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