Trail Running Calendar Idaho 2025-2026

Race the Rocks Mountain Challenge is a 50K mountain run set in the City of Rocks National Reserve and Castle Rocks State Park near Almo, Idaho. The cross-country course winds primarily on single-track trails amid granite spires, featuring the legendary Log Run—a 1,500-foot ascent in about a mile. Ru..

IMTUF 100, the Idaho Mountain Trail Ultra Festival, returns for its 14th edition, based at Jug Mountain Ranch just south of McCall, Idaho. The festival offers two distances: a 100-mile ultramarathon and a 20-mile race, forming a challenging weekend of mountain trail running. The course uses the same..

The Bogus 50/50 is a trail running event in the Boise, Idaho foothills on Saturday, September 27, 2025. All courses start and finish at the Fort Boise parking lot and use trails in the lower Boise Foothills. The event offers three distances and is described by the organizers as featuring multiple u..

Legends Never Die is a trail running event on October 4, 2025, at Oregon Gulch, Ketchum, Idaho. The event has a stated capacity of 300. The courses follow single-track forested trails and include sections of alpine terrain and rugged climbs. Organizers note that early October mountain weather can v..

The Moscow Mountain Madness takes place in Moscow, ID on October 5, 2025. The event offers three distances: 50K Half marathon (13.1 miles) 5 Mile Registration is pre-registration only and closes on Friday, October 3 at 11:59 PM PT. No race-day registration is allowed. The event does not offer ref..

Run for the Angels Memorial Run and Family Day is held at Riverstone Park in Coeur d’Alene, Idaho. In its 13th year, the event offers a fun run and walk on a 2.5-mile course along the Centennial Trail with views of the Spokane River. The day features sponsor booths, a memory-making station, a silent..

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..

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..

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..

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 atmosphere emphasizes community, inclusivity, and environment..

Race the Wolf is an outdoor trail-running event staged in Sandpoint, Idaho. The weekend offers multiple distances: a Trail Marathon, a Trail Half-Marathon, a 5 Mile Trail Run, and the Sky Climb, appealing to a range of endurance athletes. The courses are described as trail-based, typically featuring..

Standhope Ultra Challenge is Idaho’s highest trail race, based near Ketchum in the rugged Pioneer Mountain range. The event offers three distances: 100 Mile Run, 60K, and 30K. Runners face remote backcountry trails, steep, technical climbs, and alpine scenery, with climbs reaching up to 11,000 feet..

Standhope 100 is Idaho’s Highest Trail Race, now a 100-mile endurance event set in the Pioneer Mountains. The race, held July 25–26, traces remote wilderness trails with more than 23,000 feet of elevation gain and long stretches between aid stations. Features include 12 fully stocked aid stations, a..