Rocky Mountain Slam

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, Leadville, Wasatch, Ouray, and Wyoming Range. The series aims to showcase the rugged beauty and difficulty of mountain ultrarunning, with races scheduled from June to September.

Due to the high level of difficulty and lottery-based entries for some races, the series offers an inclusive opportunity for runners to experience multiple iconic races in the Rockies. Visit the organization's website for the most recent information.