Idaho
Idaho Trail Running Calendar 2026-2027
Explore the best trail runs in Idaho for 2026-2027! Our updated list features 27 exciting trail runs across the region. Find your next trail run in Idaho below and join the trail community at these great events!
October 2026
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 (50k, 30k, 20k) at Ponderosa State Park in McCall, Idaho on October 10, 2026, raising funds for local trails with varied single-track and lake views.
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.
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 race in Pocatello offering 5K, 10K, trail half marathon and 30K on City Creek singletrack, organized by Pocatello Running Club.