Trail Running calendar near Island Park 2025-2026

We have found 2 Trailruns within 80 miles of Island Park. 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..