Rocky Mountain Slam
Logan, United States • 25 Sep 2026
Rocky Mountain Slam, Logan, UT, Sep 25, 2026
The Rocky Mountain Slam is a multi-race series built around mountain 100-mile ultramarathons and culminates with The Bear 100 in Logan, Utah. The Bear 100 is the mandatory final race of the series. The event page lists the location as 1400 E. 350 S., Logan, UT, and the series date shown is September 25, 2026. Registration for the series closes on Wed, Jul 15.
Under the Rocky Mountain Slam V2.0 structure, runners must complete at least four races in total, with only The Bear 100 required. Optional races that may count toward the series include Scout Mountain 100, Bighorn 100, Hardrock 100, Leadville 100, Wasatch Front 100, Ouray 100, Wyoming Range 100, High Lonesome 100, and Crazy Mountain 100. The series organizers will keep an informal summation of a runner’s fastest four runs, including The Bear, rather than a formal overall time record.
The series was created in the early 2000s to focus on Mountain West 100-mile races. Bighorn was added in 2003, Ouray substituted for Hardrock in 2019, the series was not held in 2020 due to COVID-19, V2.0 was announced in 2022, Scout Mountain 100 was added in 2024, and High Lonesome 100 and Crazy Mountain 100 were added in 2026. Past entry challenges at some races have reduced the number of annual finishers; an example cited is 2023 Hardrock entry odds of about 0.4% for male runners and 0.5% for female runners. Visit the organization's website for the most recent information.