High Five 100 - Lake City, CO
Lake City, United States • 8-10 Aug 2025
The High Five 100 is an extreme ultra-endurance running challenge held in Lake City, Colorado. Covering an estimated 90 to 105 miles with over 40,000 feet of elevation gain, the course requires runners to summit five 14,000-foot peaks and six 13,000-foot peaks in the rugged San Juan Mountains. Participants must navigate to 24 specified proof points and checkpoints in order, choosing their own routes between them. The event has no marked course, aid stations, or entry fee, and runners can only receive support at designated checkpoints. With a 48-hour cutoff, this grueling race tests mental toughness and physical limits, attracting only highly experienced mountain ultra runners. Visit the organization's website for the most recent information.