Idaho
Idaho Trail Running Calendar 2026-2027
Explore the best trail runs in Idaho for 2026-2027! Our updated list features 19 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
A Halloween themed road run at Massacre Rocks State Park featuring mixed surfaces, costume prizes, campsite rentals, and proceeds benefitting Rockland High School XC.
Halloween morning trail event in Swan Valley, Idaho offering 50K and half marathon distances with notable elevation gain and a theme drawn from local folklore.
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.
Double Tap weekend in Meridian Idaho featuring GRIT Night Last One Standing and Hourglass shrinking rounds at Julius M. Kleiner Park.
January 2027
Backyard Ultra in Idaho Falls where runners repeat a 4.167 mile loop each hour until one remains, with Bareback and Thoroughbred support options.
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
A trail race in Pocatello on May 8, 2027 offering 5K, 10K, a trail half marathon, and a 30K on City Creek singletrack.
June 2027
Two days of races in Sandpoint, Idaho with marathon, half marathon, 10K and 5K along Lake Pend Oreille plus a waterfront festival with vendors and music.
Endurance runs in Challis, Idaho offering 108k, 55k and 32k courses through remote landscapes along the Salmon River and Frank Church Wilderness.
Mountain trail races at Schweitzer Mountain Resort on June 19 to 20, 2027, with marathon, half marathon, 5 mile and Sky Climb on marked singletrack and ridge routes.
July 2027
Multi-distance backcountry race in Ketchum, ID across the Pioneer Mountains with large climbs, remote aid stations, and dedicated support for mother athletes.
A scenic 5K through Montour Wildlife State Park that blends dirt trails and short paved sections while passing the remains of a flooded town.
August 2027
Obstacle course weekend in Payette, Idaho featuring Sprint 5K, Super 10K, Beast 21K and kids races across volcanic high desert terrain.
A loop-based elimination race in Inkom, ID where runners must complete each 1.1 mile loop within 20 minutes until a single Last Man Standing remains.
Trail races in Harriman State Park on August 14 2027 offering 50K, 25K, 10K and a 1K kids run with aid stations and included post race lunch.
Trail runs and a vendor expo at Silver Mountain Resort in Kellogg, Idaho on August 15, 2027, with a half marathon, a 13K (2000+ ft climb), and a 5K.
September 2027
Gravel running along dirt forest roads and lakeshore at Priest Lake, Idaho, with distances from 10 km up to a 50 km ultramarathon and regular aid stations.
October 2027
Trail half marathon and 55K ultra near Ketchum, Idaho on October 2, 2027, featuring forested single track and high alpine terrain.