Western States Endurance Run
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Event Overview
The Western States 100 Endurance Run follows the trans-Sierra section of the historic Western States Trail. This is a nationally dedicated trail that stretches from Salt Lake City, Utah, to Sacramento, California. The event is considered one of the most arduous running events in the United States.
Course Details
The race begins in Olympic Valley, California, the site of the 1960 Winter Olympic Games. The course starts at an elevation of 6,200 feet and climbs to Emigrant Pass at 8,750 feet within the first 4 miles. From there, runners travel west, following historic routes. The total course involves climbing 15,540 feet and descending 22,970 feet before finishing in Auburn, California. Most of the trail is in remote and rugged territory.
Registration Information
Entry into the event is managed through a lottery. The lottery for the 2026 race opens on November 1 and closes on November 21. The drawing will be held on December 6, 2025. Selected runners will receive an invitation to register. Visit the organization's website for the most recent information.
