Trail Running calendar near Idaho Falls 2025-2026

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 o..

Soup-In-The-Snow : February 2026 (early February) Soup-In-The-Snow is an informal winter trail event near Irwin, Idaho, held in early February 2026. Entry is free but participants must register on UltraSignup; registration opens December 1,..

Explore volcanic trails at the Spitfire Ultra Trail Challenge in Menan, Idaho on April 18, 2026. Choose from 55K, 30K, 12K or 5K courses that wind over sand, slick rock and sagebrush for a rugged, scenic adventure.

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 a..

Wyoming Range 100 : overview The Wyoming Range 100 is a point-to-point endurance run held in the Bridger-Teton National Forest. The event is scheduled for August 7-9, 2026, and runs from Middle Piney Lake to Box Y Ranch. The published dista..

Tackle the Cirque Series at Grand Targhee: a rugged 7.1 mile trail with 2,212 ft of climbing through alpine ridges and technical singletrack. Limited to 500 runners, expect stunning views, big climbs, and finish day swag.