Trail Running Calendar Idaho 2025-2026

Run through Sun Valley fall colors on challenging single track trails with half and 55K options, big climbs and alpine views. Finish line festivities, race photos, and local causes supported.

Event The Moscow Mountain Madness is a trail running event organized by Palouse Road Runners in Moscow, Idaho, on October 5, 2025. Distances offered: 50k Half marathon (13.1 miles) 5 Miler The race began in 1978 and was reinstated in 1992..

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 da..

Enjoy fall foliage and fun on Ponderosa State Park trails at the Sasquatch Shuffle Oct 11 and 12 2025 with 50k, 30k, 20k, Triple Threat or the new 50/50. Low key fundraiser supporting local trails with great prizes and community vibes.

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.

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 a..

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. T..

Standhope Ultra Challenge near Ketchum, Idaho, July 24 to 26 features 100 mile, 60K and 30K trail races across the rugged Pioneer range reaching 11,000 feet. Expect remote, technical terrain, hiked aid stations and handcrafted awards.

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..