Trail Running calendar near Idaho Falls 2025-2026

We have found 3 Trailruns within 80 miles of Idaho Falls. See below where and when you can find the races.

Dizzy Horse Backyard Ultra is a winter ultramarathon in Idaho Falls, Idaho, held at the Bonneville County Exhibition Hall and Sandy Downs Park. The race is a Backyard Ultra: runners complete a 4.167-mile loop every hour on the hour, until only one person remains (the Last Horse Standing). The course..

April 2026

Spitfire Ultra Trail Challenge, held near Menan, Idaho, at North Menan Butte, an extinct volcano, offers four distance options: 55K, 30K, 12K, and 5K. Runners traverse a dramatic mix of terrain on the volcano's west and east flanks, along the rim, and through its crater heart, with surfaces ranging..

June 2026

Scout Mountain Ultras is an annual trail running event held the first weekend of June in Pocatello, Idaho. The event offers a range of distances, including a 100-mile race, welcoming runners from first-timers to seasoned ultrarunners. The atmosphere emphasizes community, inclusivity, and environment..