The Rut Mountain Runs
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The Rut Mountain Runs in Big Sky, Montana
The Rut Mountain Runs is a multi day mountain running festival held in Big Sky, Montana in September 2026. The event offers a range of trail races across mountainous terrain, including a vertical kilometer and several point to point or out and back courses with substantial elevation change. The event is presented by The North Face and has associated resources such as training plans, mandatory equipment guidance, race photos, and course information.
The weekend program includes the following distances and climbs:
- Trifecta - 52.5 miles / 84K, 21,500 ft vertical gain/loss
- 50K - 31 miles / 50K, 10,500 ft vertical gain
- 28K - 17.6 miles / 28K, 7,800 ft vertical gain
- 21K - 13.4 miles / 21K, 4,000 ft vertical gain
- 11K - 6.8 miles / 11K, 1,700 ft vertical gain
- Lone Peak VK - 2.85 miles / 4.6K, 3,623 ft vertical gain
- Runt Run - 0.62 miles / 1K, 80 ft vertical gain
For 2026 the main event fields are sold out and no waitlist is offered; the free 1K Runt Run remained open at the time of the announcement. The weekend also features community nights, volunteer opportunities, and published race schedules and results. Visit the organization's website for the most recent information.
