Insanity Mud Run, Castle Rock

What happens when the imaginations of military personnel, hunters, climbers, and construction workers put their minds together? The result might be a really dirty joke—or, in this case, an even dirtier race. Designed and built by a diverse cadre of burly professionals, the Insanity Mud Run forces participants to climb, crawl, jump, and run across 5-mile and 7-mile courses in Colorado’s rugged terrain. Despite their differences in length, both courses feature 20 obstacles, and, of course, lots of mud. After the last racer has crossed the finish line, the Insanity Mud Run transforms into a family-friendly party where of-age participants and soon-to-be overwhelmed washing machines can reward themselves with an ice-cold beer.