The Rut Mountain Runs 28k is the 28.0km trail race at The Rut Mountain Runs 2026 (Big Sky Resort base area, United States). The race starts on September 12, 2026 at 07:20 AM. It starts and finishes in Big Sky Resort base area. The time limit is 9 h 20 min.
Hold a steady pace and save energy for every section.
The course climbs 2375m+. With 85m/km of climbing, the course is exceptionally steep, with long hiking-grade sections. By gradient, 49% of the distance is uphill, 48% downhill and 3% flat. The longest climb runs 10.3km at an average 10.3% grade (1057m of vertical). The longest descent runs 4.1km at an average 9.6% grade (397m of vertical). The steepest climb averages 57.6% over 0.4km. The steepest descent drops at 33.2% over 0.3km. Flat-equivalent effort: 50.0 FlatKM.
The highest summit on the course is Lone Mountain (3397m), 16.5km from the start.
Trekking poles are worth taking: about 5.9km of the course favours them.
Quad damage risk is moderate (index 30 of 100), with 37% of the load in the first half: 2 descents deserve a plan and a couple of downhill sessions before race day.
On race day, start temperatures have historically ranged from 0°C to 9°C, with around 8°C at the highest point; the chance of precipitation is about 29%. Heavy rain of 10.0mm or more falls on about 3% of days around this date.
743 finishers completed the 2026 edition. Men's winner: Cam Smith (United States) in 3:06:40. Women's winner: Camila Noe (United States) in 3:49:28.
This page has the full results and splits, a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for The Rut Mountain Runs 28k.
Other distances of The Rut Mountain Runs 2026The Rut Mountain Runs 50k (50.0km)·The Rut Mountain Runs 21k (21.0km)·The Rut Mountain Runs 11k (11.0km)·The Rut Mountain Runs Lone Peak Vertical Kilometer (4.6km)
Other editions of The Rut Mountain Runs 28k2027·2025
Official websiteruntherut.com