Western States Endurance Run

Olympic Valley, United States • 27-28 Jun 2026

The Western States Endurance Run is the world’s oldest 100-mile trail race, starting in Olympic Valley, California, and finishing 100.2 miles later in Auburn, California. Established in 1974, the course traverses traditional lands of Indigenous Peoples and features over 18,000 feet of climbing and nearly 23,000 feet of descent. Runners experience diverse terrain including the high country of Emigrant Pass, the Granite Chief Wilderness, and the historic trails of California’s gold country, crossing the icy Middle Fork of the American River. Supported by over 1,500 volunteers, the race is renowned for its challenging course and prestigious awards, including silver and bronze belt buckles for sub-24 and sub-30 hour finishes. Visit the organization's website for the most recent information.

Race information

100 mi
18000 m+
100.2 Miles
Visit the organization's website for the most recent information.
Trail runs nearby

Mountain Tiger Donner Summit is an 11-mile point-to-point mountain trail race held on Donner Summit in Tahoe, California. The challenging course features four summits and ridge running along Sugar Bowl and Royal Gorge trails, with 3,300 feet of elevation gain starting at 7,000 feet altitude. The rac..

The Point Mariah Trail Marathon, hosted by Donner Party Mountain Runners, takes place near Truckee, California, at the Soda Springs Ski Resort. This unique trail marathon covers approximately 26.4 miles with about 4,300 feet of elevation gain, featuring a multi-loop course through the protected Roya..

The Desolate Peaks will take place in Lower Forni from Saturday 16 August 2025 to Sunday 17 August 2025.

XTERRA Lake Tahoe is a renowned off-road triathlon and trail running event set in the stunning scenery of Lake Tahoe, United States. The classic triathlon course includes a 1.5K swim in Lake Tahoe’s clear waters, followed by a challenging 35.5K bike ride starting with a sandy climb up Tunnel Creek a..

The Carson Canyons Trail Runs, hosted by Ascent Runs, take place in Carson City, Nevada, starting at Long Ranch Park. Scheduled for September 27, 2025, this event offers four challenging distances: 6K, 12K, 22K, and 30K. The courses feature scenic yet demanding terrain, including jeep roads and sing..

The Warrior Way 5K is a trail running event held at George Whittell High School in Zephyr Cove, Nevada, near Lake Tahoe. Hosted by the school's Student Council, the race features a scenic course through pine forests, crossing creeks and logs, with natural obstacles like trees and rocks. In addition..