Run Rabbit Run
Steamboat Springs, United States • 18-19 Sep 2026
Run Rabbit Run : Steamboat Springs, Colorado
Run Rabbit Run is an annual trail ultramarathon in Steamboat Springs, Colorado, held in September. The 2026 event includes a 100-mile race with both Hares and Tortoises and a 50-mile race. The organizer limits entries: the 100-mile race is capped at 450 entrants and the 50-mile at 200 entrants. Registration is open for the 2026 races. The event program includes prize awards, a team challenge, and a continuing Preem Challenge.
Distances
- 100 Mile (Hares and Tortoises), limited to 450 entrants
- 50 Mile, limited to 200 entrants
Courses and terrain
Both courses run on trails in the Routt National Forest and pass notable features such as Emerald Mountain, Buffalo Pass, Mount Werner, and Rabbit Ears Mountain. The race starts at the base of the Steamboat Springs ski area (elevation about 6,900 ft). Specific high points listed include Mount Werner (about 10,568 ft), Rabbit Ears Mountain (about 10,500 ft), and Buffalo Pass (about 10,300 ft). The organizer cites elevation gain of nearly 9,000 feet for the 50-mile course and approximately 22,000 feet for the 100-mile course. Cutoffs are expressed as race durations: a 36-hour cutoff for tortoises, a 30-hour cutoff for hares, and a 15-hour cutoff for the 50-mile race.
Charity and community
The race operates as a charity event. Since 2012 the event has donated nearly $700,000 to nonprofit organizations; in 2025 it donated over $82,000 to 20 northern Colorado charities. A direct donation option is available through the event registration system. Visit the organization's website for the most recent information.