Trail Running Calendar Idaho 2025-2026

Legends Never Die is a challenging trail running event held in Oregon Gulch near Ketchum, Idaho, set against the stunning autumn backdrop of Sun Valley. The event features two main races: a Half Marathon (13.1 miles) with a 2,372 ft elevation gain reaching 7,600 ft, and a 55 km Ultra Marathon (appro..

Moscow Mountain Madness is a challenging trail running event held in Moscow, Idaho, featuring three distances: 5 miles, a half marathon (13.1 miles), and a 50k ultra marathon. The courses primarily follow technical single-track trails along the scenic spine of Moscow Mountain, with some fast logging..

The Sasquatch Shuffle is an annual trail running event held in McCall, Idaho, featuring multiple race distances including 50K, 30K, 20K, a new 50/50 challenge, and a Triple Threat option combining three races. Set in the scenic Ponderosa State Park, the course includes a 6.79-mile loop through beaut..

The Dizzy Horse Backyard Ultra is a unique winter ultramarathon held in Idaho Falls, Idaho, featuring a 4.167-mile loop through a diverse course of desert, grass, horse-race tracks, gravel roads, and occasional snow. Participants run one loop every hour until only one runner remains, making it a tes..

The Wilson Creek Frozen 50k is a challenging winter trail running event held near Melba, Idaho, about 30 minutes south of Nampa. Set on the scenic Wilson Creek trail system, the race features a 50k distance combining two loops—a 20-mile loop with 4,500 feet of elevation gain and a 10-mile loop with..

The Spitfire Ultra Trail Challenge, held in Menan, Idaho, offers runners a unique experience on the North Menan Butte, an extinct volcano formed 10,000 years ago. The event features multiple distances: 55K, 30K, 12K, and 5K, catering to various skill levels. Participants traverse diverse terrain inc..