Rocky Mountain Slam
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Event overview
The Rocky Mountain Slam on September 25, 2026 is a series-related event based in Logan, UT, with a listed location of 1400 E. 350 S. The series centers on ultra distance mountain races, each identified as a 100 mile event. Registration for the series opens on January 1, 2026. The Bear 100 is the mandatory race in the series.
Series format and history
The Rocky Mountain Slam V2.0 requires runners to complete at least four races in the series, with the Bear 100 required as one of those four. The series uses an informal summation of a runner’s fastest four runs, including the Bear 100, rather than a formal overall time record. To cover organizing costs and awards, the series now requires separate registration for runners who intend to compete.
The series has changed over time: in 2003 Bighorn 100 was added; an alternate race was used in 2019 when one event was not held; the series was not held in 2020; 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. The current list of selectable races includes the Bear 100 (mandatory) and optional events such as 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 organizers state they will add races only if another is removed. Visit the organization's website for the most recent information.
