Rocky Mountain Slam

The Rocky Mountain Slam (RMS) is a challenging series of ultra-marathons held in the Mountain West, originally conceived in the early 2000s. The series includes iconic races such as the Bear 100, Bighorn 100, and others, with participants required to complete four races, including the Bear 100 as the final event. In response to the increasing difficulty of entry into some races, the RMS has evolved to allow more flexibility in race selection. The series aims to provide runners with a memorable and rewarding experience while navigating the demanding terrain of the Rockies. Visit the organization's website for the most recent information.