Trail Running Calendar United States 2026-2027

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.

A self supported, multi stage footrace across the Colorado Plateau high desert from the Grand Canyon. Six stages over seven days cover about 171 miles (275 km), with camps set up each morning and an optional supported category.

Community 5K run and 3K walk at America the Beautiful Park in Colorado Springs raising funds for Sue's Gift to support people affected by gynecologic cancers, with in-person and remote fundraising options and tiered incentives.

Muddy Princess Boston is a women-focused 5K obstacle mud run at Kimball Farm in Haverhill, MA on June 21, 2026. The event features muddy obstacles, hydration and rinse stations, participant items and a partnership with the National Breast C..

A timed charity tower climb at Empire State Plaza in Albany that reaches the 42nd floor with 809 steps. Water stations, bailout floors and medics are provided; registered participants receive a t shirt and finisher's medal.

A multi-race trail weekend in Mammoth Lakes with marked courses, aid stations, chip timing, drop-bag services, and prize money. Runners should expect high‑altitude terrain, specific gear recommendations, and cup-less, low-waste race operati..

Mainly Marathons holds Day 6 of the Northwest Series at Hell's Gate State Park in Lewiston, ID on September 24, 2026. Races include 5K, 10K, half marathon, marathon and 50K with published entry fees and no time limits.

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..

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.

A three day mountain race weekend at Arizona Snowbowl near Flagstaff featuring a steep Agassiz Hill Climb, race distances up to 50 miles, and fixed time 6 hour and 12 hour loop options that climb toward 11,510 feet.

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.