Western States Endurance Run

Olympic Valley, United States • 28 Jun 2025

The Western States 100 Endurance Run is a prestigious ultramarathon that covers 100 miles along the historic Western States Trail, stretching from Olympic Valley, California, to Auburn. This challenging race features significant elevation changes, including a climb of 2,550 feet in the first four miles and a total ascent of 15,540 feet. The event is renowned for its rugged terrain and demanding conditions, making it a true test for ultrarunners. Registration for the race lottery occurs annually, and the event attracts participants from around the world, eager to take on this ultimate endurance challenge. 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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