Idaho
Idaho Trail Running Calendar 2026-2027
Explore the best trail runs in Idaho for 2026-2027! Our updated list features 26 exciting trail runs across the region. Find your next trail run in Idaho below and join the trail community at these great events!
August 2026
The 3rd Annual LESS Society Table Rock Hike in Boise follows the Table Rock Trail for about 3.8 miles with roughly 900 feet of gain; proceeds fund scholarships for Idaho students.
A community mud run at Lewiston Community Park featuring multiple obstacles, a Mini-Mudder kids course, and sustained local fundraising and volunteer support.
September 2026
Road races in McCall, Idaho offering 30K, 14K and 5K around Payette Lake with aid stations, bus transport, packet pickup and post race refreshments.
A Last Man Standing race in Eagle, ID where runners repeat a 4.167 mile loop hourly until one remains; a 3 Loop Challenge offers a fixed-distance option that counts for ITUS.
A set of organized runs and a walk in Twin Falls along the Snake River Canyon on 12 September 2026, featuring a 7.5 miles rim course across Perrine Bridge and a 3.5 miles downhill half race; no pets or strollers allowed.
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 is a mountain ultramarathon on September 19-20, 2026 at Jug Mountain Ranch near McCall, Idaho, using the SUPERCOURSE and aimed at experienced mountain runners.
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.
An annual uphill race and hike on Bald Mountain featuring a 3,140 ft vertical climb in 1.86 miles, a free KinderClimb for children, and timed Race and Hike classes.
October 2026
An October trail running event in Ketchum, Idaho offering a 13.1 mile half marathon and a 55K ultra on single-track and alpine trails.
Trail races on Moscow Mountain with 50K, half marathon and 5 mile options on mostly single-track routes with aid stations and drop bag service.
A 15th annual memorial fun run and family day at Riverstone Park in Coeur d'Alene, raising awareness and funds for NISSA with a scenic 2.5 mile course.
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.
Looped trail races at Ponderosa State Park in McCall, Idaho offering 20k, 30k and 50k options with 6.79 mile loops and proceeds benefiting local trails.
A Halloween-themed run at Massacre Rocks State Park along the Snake River with costume prizes and a mixed surface out and back course.
A Halloween morning trail race in Swan Valley, Idaho featuring a 50K with 6,000 ft gain and a half marathon with 2,700 ft gain.
November 2026
In-person and virtual runs on 11/14/2026 in Boise supporting InspireKidz; in-person is a two-hour loop challenge and virtual runs range from 1 to 26.2 miles.
January 2027
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.