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 traditional up and down mountain race in Waterville Valley, NH on September 20, 2026 covering about 7 miles with 3000 feet of ascent; youth entry is available and day of registration is offered.

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

Trail and kids runs in Rupert, VT on September 19, 2026, featuring an 8-mile forest trail with about 1,800 ft of climbing and a 0.75 mile kids loop; proceeds go to Merck Forest and 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 trail race from Logan to Bear Lake on September 25, 2026, passing through forested and mountain terrain. Entry used a lottery and requires a qualifying race result plus eight hours of service.

A multi-day trail running festival in Mammoth Lakes with races from a kids 1K to a 50K and a Dragon's Back ascent, plus festival programming, prize purses, timing, aid stations, and lodging discounts.

A series of Rocky Mountain 100 mile races built around the Bear 100 in Logan Utah. Runners must complete four races including the Bear and the series uses an informal tally of a runner's fastest four finishes.

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.

A 136 mile point to point on the Ice Age State Trail through the Southern Kettle Moraine, with varied trail surfaces, nine staffed aid stations and full on-course support over an approximate 55 hour time limit.

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 day trail running trip in Zion National Park from September 25 to 28, 2026. Group runs include short outings and a 17 to 20 mile East Rim route, with park fees, lunches, van transport, and shared hotel included.

A September 2026 trail race at Freedom Hills Ministries featuring a 1 Mile kids run, 5K and 10K with age-group prizes and finisher medals, plus an Ultimate Challenger that consists of a 5K every hour for 12 hours.