Idaho
Idaho Trail Running Calendar 2026-2027
Explore the best trail runs in Idaho for 2026-2027! Our updated list features 22 exciting trail runs across the region. Find your next trail run in Idaho below and join the trail community at these great events!
September 2026
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 Sun Valley ascent to Warm Springs covering 1.86 miles and 3,140 ft, with race and hike classes, a KinderClimb for kids, family and business team competitions.
October 2026
Trail running in Ketchum on October 3, 2026 offering a forested half marathon and a 55K ultra with substantial elevation and alpine terrain.
Trail races on Moscow Mountain with 5 mile, half marathon and 50k courses on mostly technical single track and scenic Palouse views.
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.
A fall fundraising trail event in Ponderosa State Park near McCall, Idaho offering 20K, 30K and 50K looped courses with varied single-track and Payette Lake views.
A Halloween themed road run at Massacre Rocks State Park featuring mixed surfaces, costume prizes, campsite rentals, and proceeds benefitting Rockland High School XC.
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
A Run to InspireKidz features a two hour in person lap challenge at Cynthia Mann Elementary and a flexible virtual option, with all registration proceeds supporting InspireKidz.
An hourglass-style endurance event in Meridian ID where rounds shorten each lap and athletes choose Run, Hybrid, Ruck, or Walk formats.
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.
April 2027
Trail races on North Menan Butte in Menan, Idaho featuring volcanic terrain, caldera rim views and distances from 5k to 55k each April.
May 2027
Trail races of 5K, 10K, half marathon and 30K on City Creek singletrack near downtown Pocatello with updated routes and rolling climbs.
June 2027
Trail events in Challis Idaho offering 108K, 55K and 32K courses with high mountain climbs, multiple aid stations and crew access for longer distances.
A two day mountain trail event at Schweitzer Mountain Resort offering marathon, half marathon, 5 mile and Sky Climb courses with aid stations and marked trails.
July 2027
High-altitude trail races near Ketchum, Idaho offering 100-mile, 60K, and 30K courses on steep, technical terrain with race-day support for mothers.
A scenic 5K through Montour Wildlife State Park that blends dirt trails and short paved sections while passing the remains of a flooded town.