Trail Running calendar near Idaho Falls 2026-2027

A farm themed 5k at the Bonneville County Fair with a flat course, multiple water stations, finishers awards, and a free looped kids obstacle course.

A yearly non-profit uphill race at Jackson Hole Mountain Resort, roughly 6.1 miles and 4,100 feet of climb, finishing at the Aerial Tram with proceeds to Friends of Pathways.

A memorial 5K on August 12, 2026 at the Inkom Last Man Standing Trail in Inkom, Idaho, run as three loops on a dirt single-track course supporting the family.

A Last Man Standing race in Inkom, ID on Aug 14, 2026 with repeated 1.1 mile loops featuring 240 ft of elevation gain per loop until one runner remains.

Trail races in Island Park ID offering a 1K kids run plus 10K, 25K and 50K on natural single track with on-course aid and post-race lunch.

Trail runs at Turpin Meadow Ranch near the Grand Tetons on August 22, 2026 supporting the John Wayne Cancer Foundation with 30K, half marathon and 8K options.

Trail races at Grand Targhee on August 29, 2026 cover 7.1 miles with 2,212 feet of vertical gain across Sport, Expert, and Pro divisions plus a volunteer category. Per race prizes and season points are awarded and the field is capped at 500..

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 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.

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.

Trail races on North Menan Butte in Menan, Idaho featuring volcanic terrain, caldera rim views and distances from 5k to 55k each April.

A trail event in Pocatello on May 8, 2027 offering 5K to 30K courses on City Creek singletrack with updated route layouts.