Rocky Mountain Slam

Rocky Mountain Slam (RMS) is a Rocky Mountain ultra-running series anchored in Logan, Utah. The core format features 100-mile races with the Bear 100 as the mandatory finish. RMS V2.0 expands options to include Scout Mountain 100, Bighorn 100, Hardrock 100 (now optional), Leadville 100, Wasatch Front 100, Ouray 100, and Wyoming Range 100.

Runners must complete at least four races, with two options available per month from June to September. There is no formal overall time record; instead an informal tally tracks a runner’s fastest four runs (including Bear). A series registration is required to participate.

Scout Mountain 100 was added in 2024. Visit the organization's website for the most recent information.