Western States Endurance Run

Olympic Valley, United States • 28 Jun 2025

The Western States 100 Endurance Run is a prestigious ultramarathon that spans 100 miles along the historic Western States Trail, from Olympic Valley, California, to Auburn. This challenging race features significant elevation changes, including a climb from 6,200 feet to 8,750 feet at Emigrant Pass within the first four miles. Participants face a total ascent of 15,540 feet and a descent of 22,970 feet, navigating through rugged and remote terrain. The event is renowned for its difficulty and is considered a pinnacle challenge for ultrarunners, attracting competitors from around the world. Visit the organization's website for the most recent information.

Race information

100 mi
2550 m+
100 Miler
Visit the organization's website for the most recent information.
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