Trail Running Calendar Idaho 2025-2026

The Inkom Last Man Standing 1.1 is a unique endurance running event held on a private 1.1-mile loop located at the Solomon family's property in Inkom, Idaho, home to Lavender Lane Lavender Farm and Leapknot Coffee Roasters. The course features a challenging 240-foot elevation gain with rolling hills..

The Harriman 25K/50K Trail Run, held annually at Harriman State Park near Island Park, Idaho, offers a scenic and well-curated trail running experience. The event features three distances: an 8.1-mile race, a 25K, and a 50K (two laps of the 25K course). Runners enjoy beautiful single-track trails th..

The Foothills XC12K is a cross-country running event held in Boise, Idaho, at the Military Reserve located at 750 Mountain Cove Road. Scheduled for August 23, 2025, the race offers two distances: a challenging 12K and a 5K course. Participants will experience scenic trails through the Boise Foothill..

The Payette Lake Run, held in McCall, Idaho, offers three race distances: 30K, 14K, and 5K. The full 30K course circles Payette Lake, while the 14K starts near North Beach and the 5K near Little Lake on Lick Creek Road. All races begin and end at Brown Park in downtown McCall, providing restroom fac..

If You're Not First You're Last is a unique endurance running event held in Eagle, Idaho, featuring a challenging 4.167-mile loop course. The race tests participants' stamina and grit rather than speed, as runners must complete each loop within an hour and be ready to start the next loop on the hour..

The Crater Crawl will take place in Mountain Home on Saturday 13 September 2025. You can run 6 miles.

The RIM2RIM Race will take place in Twin Falls on Saturday 13 September 2025. You can run between 3 and 7 miles.

The Pocatello Fall Ultra, held in Pocatello, Idaho, is a challenging trail running event featuring multiple race distances: 100K, 60K, 20K, and a kids' race. The ultra courses boast significant elevation gains, with the 100K offering over 10,000 feet and more than 45 miles of single-track trails on..

Race the Rocks is a challenging 50K mountain race held in Almo, Idaho, within the scenic City of Rocks National Reserve and Castle Rocks State Park. The course features rugged single-track trails surrounded by towering granite spires up to 1,000 feet high, offering stunning panoramic views. A highli..

The Idaho Mountain Trail Ultra Festival (IMTUF 100) is a challenging mountain ultramarathon held annually near McCall, Idaho, starting and finishing at Jug Mountain Ranch. The 14th edition in 2025 features a 100-mile race beginning Saturday morning and a 20-mile race on Sunday. Known for its rugged,..

The Bogus 50/50 is a trail running event held in Boise, Idaho, featuring three distances: a challenging 50 Mile ultra, a 50K, and a 27K race. All courses start and finish at the Fort Boise parking lot in the lower Boise Foothills, showcasing some of the region's best single-track trails, including D..

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

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 ultramarathon. The courses primarily traverse technical single-track trails along the scenic spine of Moscow Mountain, with some fast loggin..

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 where participants run three distances over two days. The course consists of a scenic 6.79-mile loop through Pond..

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..

The Standhope Ultra Challenge is a rugged mountain race held in Idaho’s Pioneer Mountains near Ketchum. It offers three challenging distances: a 100-mile ultra with over 23,000 feet of climbing, a 60K featuring 9,000 feet of vertical gain over 37.2 miles, and a 30K covering the latter half of the 60..