The Rut Mountain Runs

Event overview

The Rut Mountain Runs is a three-day mountain trail running event in Big Sky, Montana, held September 11-13, 2026. The event includes multiple race formats on mountain and alpine terrain. It is presented by The North Face. Online registration opens January 6, 2026 at 8 AM Mountain Time. Visit the organization's website for the most recent information.

Race distances

• Trifecta – 52.5 miles (84 km); 21,500 ft (6,554 m) vertical gain/loss
• 50K – 31 miles (50 km); 10,500 ft (3,200 m) vertical gain/loss
• 28K – 17.6 miles (28 km); 7,800 ft (2,375 m) vertical gain/loss
• 21K – 13.4 miles (21 km); 4,000 ft (1,220 m) vertical gain/loss
• 11K – 6.8 miles (11 km); 1,700 ft (518 m) vertical gain/loss
• Lone Peak VK – 2.85 miles (4.6 km); 3,623 ft (1,105 m) vertical gain
• Runt Run – 0.62 miles (1 km); 80 ft (24.4 m) vertical gain/loss