Experience the Montana Trail Series throughout summer 2026, featuring four separate trail running events across stunning wilderness locations from July through August. Choose to run one event or all four, with distances ranging from 5K to 50K at each location, including the Yellowstone Trail Marathon and Trail Races in West Yellowstone (July 11 and August 1), The Bob Marshall Trail Races near Seeley Lake (July 18), and The Divide 50 and 25K near Butte (July 25). Every runner gets a custom medal, bib, sticker, aid station support, Hammer Nutrition products, and certified course results, plus the option to purchase discounted race shirts.