Trail Running Calendar Idaho 2026-2027

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.

A mountain ultramarathon weekend near McCall, Idaho on September 19 to 20, 2026 offering 100 mile and 20 mile courses from Jug Mountain Ranch. The race is remote, a Hardrock and Western States qualifier, and has a strict refund policy.

Mainly Marathons holds Day 6 of the Northwest Series at Hell's Gate State Park in Lewiston, ID on September 24, 2026. Races include 5K, 10K, half marathon, marathon and 50K with published entry fees and no time limits.

Run, hike, or bike up the mountain in Tamarack to support suicide awareness and mental health recovery. Face a challenging elevation gain while collecting tokens of strength and enjoying views of Valley County.

Experience the extensive single track trails of the Boise Foothills in this premier trail event. Runners can choose between 50 mile, 50K, and 27K distances starting from Fort Boise.

A trail half marathon and 55K ultra around Oregon Gulch in Ketchum, Idaho on October 3, 2026. Courses run on marked single track with large elevation gains, stocked aid stations, free race photos, and support for local charities.

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..

Zombie Mania on October 10, 2026 is a 5 km loop through Nature Park and Eagle Park where volunteers dressed as zombies try to steal runners' flag belts. A separate 1 mile costume run follows the same parks without zombies.

Trail runs at Ponderosa State Park near McCall, Idaho, offered as a fundraiser with 20K, 30K, and 50K looped courses that showcase Payette Lake and fall foliage. Both in-person and virtual options are available in October.

A Halloween morning trail race in Swan Valley, Idaho offering a 50K with 6,000 ft gain and a half marathon with 2,700 ft gain. The course runs on Fall Creek Road near Rainbow Valley Ranch and is close to Idaho Falls.

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.

Trail races of 55K, 30K, 12K and 5K take place around North Menan Butte in Menan, ID in April 2027, featuring volcanic rock, sand and sagebrush. Registration opens July 1, 2026.

A multi-distance trail event in Pocatello on May 8, 2027 featuring singletrack in the City Creek Trail System. Options include 5K, 10K, a trail half marathon and a 30K with updated routes and noted climbs.