Trail Running Calendar United States 2026-2027

Trail ultramarathon at Great Bear near Sioux Falls, SD with 20k, 30k and 50k distances run as repeated 10 km loops with about 1200 ft gain per loop. Aid station and drop bag tarp are located at the Bear Den Chalet.

An endurance event on the Thumb Open Space trail in Estes Park that runs from sunrise to sunset. Participants repeat a 1 km out and back loop, collect poker chips at each turnaround, and earn milestone pins and awards.

Timed 3 and 6 hour events on a measured 2.425 mile loop through shaded woodlands at Route 66 State Park. Cupless event with aid at Forest Shelter; personal hydration and a headlamp are required.

Trail races in Hartford, Vermont, through the Hartford Town Forest and Conservation Area. Courses mix logging roads, packed trails, and single track, with a 5K mostly downhill and a 10K that earns Western NH series points.

A just under 50 km trail run in the southern Massanutten range with about 5,700 ft of elevation change, six aid stations, and a start and finish at the Route 211 parking area. Entry is limited to 75 runners.

A 5K run/walk along the Bear River in Petoskey, Michigan, featuring a footbridge and riverside gravel trail with a shaded final mile; proceeds support the Northern Michigan Cancer Crusaders and awards are given by age division.

A running event at Charlestown Park offering a five person relay and a solo ultra challenge on a roughly 2.2 mile loop. Teams and solo runners compete to cover the greatest distance with cash awards for top finishers.

A multi-sport relay event at Kroger Field in Lexington that raises funds through TeamRaising and donations to help cancer patients with needs such as gas, hotels, and meals.

A 100-minute looped running event at Williams Park in Gibsonburg where laps are recorded on a 0.9 mile loop. Entry is $25 and proceeds support a local foundation; all finishers receive awards and post-run food is provided.

A roughly 3 mile obstacle trail run at Joint Base Lewis McChord on July 18, 2026, limited to 1,500 entrants. Waves of 25 start every five minutes and packet pickup includes a shirt, custom medal, bib and beverage ticket.

A 12 hour trail event in Lawrence Woods, Medford, MA featuring an about 5 mile loop that stays in the woods, a minimal aid station, and the option for participants to set up personal support near the start area.

A free one-day trail event on 07/18/2026 at Sweet Pine near Browning, MT, featuring 10K, 5K and 1-mile races with registration open 2026-06-14 to 2026-07-18; some races list an 8-year minimum age.

A midsummer trail event at Crescent Hill in Honey Creek, Iowa offering a 5K trail race and a 2.2 mile nature hike, with costume awards and proceeds supporting a tow rope and four season recreation in the Loess Hills.

The Dawn of Time Fun Run will take place in Lubbock on Saturday 18 July 2026. You can run 5 kilometers.

A summer mountain trail race in Manitou Springs, Colorado, covering *12.6 miles* up Barr Trail to Barr Camp and back. The event is run under a Pike National Forest permit and is part of the Garden to Peak Challenge.

A three day, fully supported trail running stage race in Leadville, Colorado that crosses the Continental Divide between Hope Pass and Red Cliff. Offers a 51 mile Full Pint and a 35 mile Half Pint with a field limited to 500 runners.

Cliff Runner 10K on July 19, 2026 in Sherwood, WI is a 10K trail run on mostly single track with rocks, roots, boulders and over 500 feet of elevation gain. Registration includes a T shirt and finisher medal and a share of proceeds supports..

High-elevation trail races in Silverton, Colorado offering a 12 mile summit route with a final 300 foot scramble and an 11 km out and back to Deer Park, on jeep roads with aid stations and cupless refills.

Experience a rigorous trail event at Pearsall Park featuring hilly courses and summer conditions. Runners enjoy professional timing, a commemorative singlet, and a post race taco breakfast in San Antonio.

Choose your distance from 7 to 28 miles in this Adirondack endurance walking event at Gore Mountain. Hike through shaded forests and along scenic ridgelines with the option to add weight for a rucking challenge.