Rocky Mountain Slam

Rocky Mountain Slam - Logan, UT

The Rocky Mountain Slam event on September 25, 2026 takes place in Logan, Utah at 1400 E. 350 S. Registration for the event closes Wed, Jul 15 at 11:59 PM MT. The event is presented as part of the Rocky Mountain Slam series.

The Rocky Mountain Slam is a series built around 100 mile races in the Mountain West. The series originally required completion of Hardrock and The Bear plus two additional races from a small set. Over time the series format changed. Bighorn 100 was added in 2003. In 2019 Ouray 100 substituted for Hardrock when Hardrock was not held. The series was not held in 2020 because of COVID 19. A revised format called Rocky Mountain Slam V2.0 was announced in 2022 and now requires completion of at least four races with The Bear 100 as the mandatory final race. Recent additions include Scout Mountain 100 in 2024 and High Lonesome 100 and Crazy Mountain 100 in 2026.

Under the V2.0 rules runners choose from a list of optional races including Scout Mountain 100, Bighorn 100, Hardrock 100, Leadville 100, Wasatch Front 100, Ouray 100, Wyoming Range 100, High Lonesome 100 and Crazy Mountain 100, with The Bear 100 required. The series requires runner registration and uses an informal summation of a runner's fastest four runs including The Bear 100 rather than a formal overall time record. Visit the organization's website for the most recent information.