Bear 100 Endurance Run

Logan, United States • 26-27 Sep 2025

The Bear 100 Endurance Run is a challenging 100-mile point-to-point ultramarathon held annually in late September, traversing the scenic Wasatch-Cache National Forest and Bear River Range across Northern Utah and Southern Idaho. Starting in Logan, UT, and finishing at Bear Lake, ID, the course features 22,816 feet of elevation gain, with a maximum altitude of 9,043 feet and an average elevation of 7,320 feet. Runners experience diverse terrain including pine forests, golden aspens, and vibrant red maples, offering stunning autumnal views. The race serves as a qualifier for prestigious events like Hardrock and Western States 100, with a 36-hour cutoff time. Participants must meet strict qualifying standards and complete volunteer service before racing. Visit the organization's website for the most recent information.

Race information

UTMB 100M
100 mi
100 Miler
Visit the organization's website for the most recent information.
Trail runs nearby

The Shoreline 10K & 5K is a scenic dirt trail running event taking place in Logan, Utah, on June 7, 2025. Participants can choose between a 10K or a 5K distance, both of which start at First Dam and follow the picturesque Bonneville Shoreline to Green Canyon and back. This event is part of the Urban..

The Little Mountain Endurance Challenge is a versatile outdoor race event held in Franklin, Idaho, featuring 5K, 10K, 6-hour, and 12-hour challenges. Participants can enjoy scenic views of mountains and valleys while tackling courses that include hill climbs and multiple ascents of Little Mountain...

The Logan Peak Trail Run is a challenging 26-mile ultramarathon held in the scenic Bear River Range near Logan, Utah. The course features over 6,600 feet of elevation gain and loss, traversing diverse terrain including single-track trails, jeep roads, pine and fir forests, aspen groves, wildflower m..

The White Pine 50 Backcountry Run is an exciting 50-mile trail running event set in the scenic Upper Logan Canyon of Northern Utah. Participants will start and finish at Beaver Mountain Ski Area, navigating a looped course that includes parts of the renowned Bear 100 route. The event features unique..

The Rocky Mountain Slam is an ultramarathon series held in the Mountain West, featuring some of the most challenging 100-mile races in the region. Participants must complete at least four races, including the mandatory Bear 100, with optional races such as Scout Mountain, Bighorn, Hardrock, Leadvill..