The Yellowstone Trail Marathon and Trail Races – West Yellowstone, MT 2026

You don't want to miss this spectacular trail run just outside of Yellowstone National Park! The West entrance and gateway to Yellowstone National Park is surrounded by three national forests, blue-ribbon trout streams, and beautiful mountain lakes. Come run a Marathon, Half Marathon,10K or 5K trail run with breathtaking scenery that takes place right outside the world's first National Park on the trails of Custer Gallatin National Forest. Click HERE for more information on the Bob Marshall Trail Race. Click HERE for more information on The Divide Trail Race. RACE PERMITTED UNDER SPECIAL USE AUTHORIZATION FROM THE CUSTER GALLATIN NATIONAL FOREST Each participant is recommended by the Forest Service to carry bear spray for this event.