Western States Endurance Run
Olympic Valley, United States • 27 Jun 2026
Western States 100 Endurance Run
The Western States 100 Endurance Run is a 100 Miler that traverses the trans Sierra portion of the Western States Trail, a nationally dedicated trail running from Salt Lake City, Utah to Sacramento, California. The event begins in Olympic Valley, California.
From the valley floor at 6,200 feet the route ascends to Emigrant Pass at 8,750 feet in the first four miles, a climb of 2,550 vertical feet. Over the full course participants climb 15,540 feet and descend 22,970 feet before reaching Auburn in California's historic gold country. Most of the trail passes through remote and rugged territory.
The trail follows routes first used by Native Americans and later by gold and silver miners of the 1850s. People who are unfamiliar with the area should use caution when planning training runs, especially in the high country.
Entry information for 2026 includes a lottery. Lottery registration is open November 1 through November 21 via the event portal, and the lottery drawing will be held December 6, 2025. Selected lottery entrants and automatic entrants will receive an invitation to register. General registration opens December 10, 2026 at 12:00 AM PT. Visit the organization's website for the most recent information.