FATMAP by Strava

The Rut 20k Race

Big Sky

The newest distance for The Rut, added in 2023.

Trail Running Difficult

22 km
1.3 km
1.3 km
3-4 hrs
Low Point
2.2 km
High Point
3 km
The Rut 20k Race Map

The Rut 20K is a new addition to the Rut Mountain Runs, a three-day celebration of mountain running in Big Sky, Montana.


This challenging course will take you through some of the most scenic and rugged terrain in the Rocky Mountains, as you climb and descend over 4,000 feet of elevation. You will experience a variety of trails, from singletrack to dirt roads. In fact, this new 20k course is designed to follow the best-quality singletrack that Big Sky has to offer.

You will also get a taste of the famous Lone Peak, as you ascend to within spitting distance of the summit and then descend down a large scree slope. Along the way, you will enjoy breathtaking views of the surrounding peaks, valleys, and forests.

The 20k route is a distinct step up in difficulty from the 11k route, but it's not quite as difficult as the 28k, since "it does not traverse the exposed and rugged ridgelines of lone peak like the Rut 28K and 50K," according to RunTheRut.com.

Sources: Conversation with Bing Chat. https://runtherut.com/20k-race-details/ https://outdoor-society.com/pushing-the-limits-running-the-rut-race-in-big-sky-montana/



Medium Exposure

2 out of 4

The trail contains some obstacles such as outcroppings and rock which could cause injury.


2 out of 4

Away from help but easily accessed.

Best time to visit

between May and October

Similar routes nearby

Guidebooks in this area