Trail Running Calendar United States 2026-2027

A non-timed 2K and 5K trail run/walk at Case Creek Valley that welcomes leashed dogs and supports Rock Island County Animal Care & Control Shelter, with race bibs, optional T-shirts, finisher dog tags, and hydration stations.

Expo Park XC is an old school grass cross-country meet in Aurora, Colorado, featuring creek crossings, a wooden footbridge and bale jumps. Races range from about 1 km for young children to a 5 km open race.

A running event in Iroquois Park with an approximately 7.5 mile Lookout course and a 3.4 mile Short Loop option. Finishers receive medals and shirts are available by preorder with limited race day sales.

A one lap up and down mountain race in Waterville Valley, New Hampshire on September 20, 2026, part of the USATF-New England Mountain Racing Circuit. The course uses grassy ski slopes and gravel service roads and includes three aid stations..

The Arc'teryx Run Boston will take place in Milton on Sunday 20 September 2026. You can run 10 kilometers.

An 8.5 mile trail loop at Merck Forest in Rupert, Vermont with about 1,800 ft of climbing, two aid stations, and a separate 0.75 mile kids loop. Field limits apply and all proceeds support Merck Forest & Farmland Center.

The Grand to Grand Ultra is a self supported stage footrace across the high desert from the Grand Canyon. The 13th edition covers 171 miles over six stages in seven days and now includes a supported category.

A day of the Northwest Series at Hell's Gate State Park in Lewiston, ID offering 5K, 10K, half marathon, marathon and 50K distances with listed entry fees and on-site merchandise.

A point-to-point 100 Mile race from Logan, Utah to Bear Lake on September 25, 2026, running through the Wasatch-Cache National Forest and the Bear River Range. The event is a Hardrock and Western States qualifier and requires prior qualifyi..

A three-day trail running festival in Mammoth Lakes with multiple races from a Kid's 1K to a 50K, a summit ascent, festival programming, awards and prize purses, and support services including timing, aid stations, and transport.

Rocky Mountain Slam in Logan, Utah is centered on a series of 100 mile races culminating with The Bear 100 on September 25, 2026. The revised series requires four finishes including The Bear and includes several optional mountain 100s.

A point to point ultra on Nebraska’s Cowboy Trail offering 200 mile and 100 mile options on a mostly crushed limestone, runnable and flat rail trail served by multiple stocked and unmanned aid stations.

Experience the wild spaces of Northern Colorado with a weekend of trail races ranging from a half marathon to a 50 mile ultra through scenic forests and scout camp trails. Stay on site with available camping and community meals.

Echo 136 in Whitewater, WI is a 136 mile ultramarathon on the Ice Age State Trail with a 55 hour cutoff and ten staffed aid stations. The course records about 11,148 ft gain and 10,961 ft loss.

Three days of mountain running at Arizona Snowbowl in Flagstaff, AZ featuring a steep Agassiz Hill Climb, races from 5K to 50 miles, new 6 and 12 hour loop events, and a point to point mountain 20K with significant elevation gain.

A two day festival in Shawnee Ohio on the Buckeye Trail featuring a Half Marathon, 10K, 5K, a 10 Mile Hike and a backpacking workshop. Events occur on mostly single track trail within the Wayne National Forest.

A trail ruck march in Mt. Gretna, PA on September 25, 2026 with 4 mile and 8 mile adult and junior categories. Prize awards are based on weighted ruck participation.

A fall weekend of trail running and camping in the Sawtooth Backcountry, staged from Foggy Dew Campground with guided routes, glamp style camp amenities, shuttles, and three distance options.

Three days of group trail running in Zion National Park with included park fees, lunches, van transport, and shared hotel rooms; limited to 22 participants.

A 5K trail run on Bella Rose Vineyard grounds in Lewiston with a stemless wine glass and complimentary wine tasting for participants 21 or older. The event features professional timing, finish line photos, music, and on site parking.