Trail Running Calendar United States 2026-2027

A Spartan obstacle weekend at Carter and Stevens Farm in Barre, MA on June 27 and 28, 2026 with Sprint, Super, and kids races, plus an obstacle workshop and spectator access.

Experience a weekend of outdoor sports at McDougal Lake with trail runs and mountain bike races ranging from 4 to 32 miles. Compete for podium spots or enjoy the party lap at this multi discipline trail festival.

Test your endurance on a 2 mile paved loop at the Rodale Park 12 Hour Challenge. Cycle, run, or walk to support the development of the September 11th National Memorial Trail.

A 20K trail race at Bridger Bowl with technical single track and cupless aid stations, a four hour cut off, chip timing, a race shirt and catered lunch; packet pickup is available the day before and race morning.

Crown Z Trail Run is a chip timed trail race from Ruley Trailhead toward Vernonia and back, offering 5K, 10K and a half marathon. Shuttles run from Scappoose High School and packet pickup is the morning of the event at the trailhead.

Mud Factor returns to Eugene MX Park on June 27, 2026 with a 5K obstacle run offering Kidz Family and adult waves, required signed waivers, and spectator festival access with a $10 cash admission for adults.

A three race trail series at Sunlight Mountain Resort near Glenwood Springs, Colorado. It offers 5K, 10K, and a half marathon with specified elevation gains, limited aid station support, and defined registration windows.

A 30K trail race at Mount Airy Forest in Cincinnati made of three 10K loops. Finishers receive a t-shirt and medal; the race counts toward the Alpine Trail Race Series and awards series points.

A night 5K at Lakeside Park with mixed trail terrain, reflective markers, and required personal lighting; finishes receive handmade medals and proceeds benefit the Pawling Recreation Department.

A 10 kilometer trail race at Alderfer Ranch in Evergreen Colorado on June 27 2026. The event includes shuttles from Wulf Rec Center, vendor tents, on-site food and water refill stations while the course is supported by course marshals.

Hourly 4.1667 mile Backyard Ultra loops at Countryside YMCA in Lebanon Ohio on June 27 2026, plus fixed 12 hour and 24 hour backyard options. Field limited to 150 runners and crews are limited to three people per runner.

Riggs CAT Rock N Run 5K on June 27, 2026 at Martin Marietta Hatton Quarry in Cove AR features a chip timed 5K, an untimed family fun run, cash prizes for top finishers and post race activities including rock painting and a vendor area.

A community trail event in Fayetteville combining a 1K adaptive dash for families affected by autism and a 5K loop through Kessler Mountain, organized by Mitchell’s Mountain to support local services and accessible trail development.

Timed endurance races on a 5K loop at Heritage Park in Adrian Michigan offering 3 hour and 6 hour formats, central aid stations, organized registration, finisher recognition and a post event gathering.

A trail race near Issaquah, WA offering 50K, half marathon, 5 mile and kids races across Tiger Mountain trails with steep climbs, ridge running, aid stations and finish‑area food.

A trail run on the forested slopes of Mt. Shasta with sustained climbs, runnable descents, and multiple distance options. The long route reaches the top of every chairlift while a shorter roughly 5k goes to the Marmot lift.

A full and half marathon in Kinlichee, Arizona on June 27, 2026, following an out and back course along Highway 264 through Navajo sandstone canyon and local wash. Water stations and medical support are provided.

Trail races through a private deer preserve in Altoona, AL on Jun 27, 2026 offering two, four and ten mile looped divisions. The ten mile division includes three one-shot target stages with time penalties for misses.

A community 5k on June 27, 2026 in Carrier Mills, Illinois offering a 5k run and a 5k walk to support the local cross country team, with registration fee of $25, a T-shirt deadline of June 13, and awards for top finishers.

A charity team challenge on June 27, 2026 in Bristol, NH that recreates Special Forces mission tasks. Teams of 6–12 choose Operator or Recruit levels, with awards for top teams, MVPs, fundraising leaders, and participant milestones.