Trail Running Calendar Idaho 2026-2027

Two day trail event at Silver Mountain Resort in Kellogg, Idaho featuring a 13K (listed as 8 Miles) and a 2 mile run with gondola access, a two day vendor village, swag bags, and weekend giveaways.

Trail races of 5K and 12K take place in the Fort Boise Park Military Reserve Trail System in Boise, Idaho. Proceeds benefit the Bogus Basin Nordic Team and the 12K includes cash prizes plus a post race raffle.

A community run on Table Rock Trail near Boise that follows an approximately 3.8 mile round trip course with 900 feet of climb. Proceeds support scholarships for Idaho students and the LESS Society mission.

A muddy mix of cross country running and obstacles in Lewiston on August 29, 2026. The event can be run competitively or enjoyed as a casual mud run and includes a Mini-Mudder for children 10 and under.

A community running event in McCall offering 30K, 14K and 5K courses that start and finish at Brown Park, with packet pickup the day before, bus transport to remote starts, multiple aid stations, and post-race refreshments.

A loop race in Eagle, ID where runners repeat a 4.167 mile circuit each hour until only one continues. A separate 3 Loop Challenge offers fastest male and female winners and can count for the Idaho Trail Series.

Take part in a Snake River Canyon tradition featuring a transition across the Perrine Bridge. Choose between 7.5 mile and 3.5 mile distances for a unique route through the Idaho landscape.

A trail event on September 12, 2026 around the volcanic Crater Rings near Mountain Home, Idaho. Options include a 10K loop on a jeep road or a 2.9 mile out and back to the East Crater viewpoint, with hydration stations and awards.

IMTUF 100 in McCall, Idaho runs September 19 to 20, 2026 from Jug Mountain Ranch with 100 mile and 20 mile options. The race is a Hardrock and Western States qualifier and emphasizes remote mountain running and self reliance.

A day of the Northwest Series at Hell's Gate State Park in Lewiston, ID offering 5K, 10K, half marathon, marathon and 50K distances with listed entry fees and on-site merchandise.

Trail event in Boise offering 50 mile, 50K and 27K courses on foothill trails with significant elevation gain; a cash prize is offered for early leaders in the 50 Mile and the race requires a collapsible cup for aid stations.

A fall trail event at Oregon Gulch near Ketchum, Idaho offering a Half Marathon and a 55 km ultra on forested single-track routes with significant elevation gain, aid stations, staggered starts, and free race photos.

Moscow Mountain Madness invites trail lovers to tackle 5 mile, half marathon or 50k courses across technical single track and forest scenery. Tough terrain, aid stations and authentic backcountry vibes make it a memorable mountain run.

A community memorial run and family day at Riverstone Park in Coeur d’Alene honoring babies and children who died suddenly and unexpectedly. The event features a scenic 2.5 mile course, memorial signs, a remembrance ceremony, and a silent a..

A playful 5 km loop through Nature Park and Eagle Park where volunteers acting as zombies try to steal runners' flags. A separate 1 mile costume run has no zombies and suits participants who prefer a gentler experience.

A fundraising trail event at Ponderosa State Park near McCall, ID, offering 50K, 30K, and 20K loop races. Each loop is 6.79 miles with about 640 feet gain on varied single-track terrain; a virtual option runs October 1–31.

Test your endurance in Idaho Falls at this winter backyard ultra. Complete 4.167 miles every hour on a varied terrain course until only one runner remains at the Bonneville County Exhibition Hall.

Experience a winter trail race through the Reynolds Creek gorge and Wilson Peak in Idaho. Choose between 10 mile, 20 mile, or 50k distances featuring up to 6000 feet of elevation gain in the stunning Wilson Creek trail system.