Trail Running calendar near Island Park 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.

The Yellowstone Trail Race will take place in West Yellowstone on Saturday 1 August 2026. You can run between 10 and 42 kilometers.

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.