Trail Running Calendar United States 2026-2027

A runner-built 4.5 mile loop ultra in a reclaimed limestone quarry offering 6 and 12 hour solo or relay options plus a single 4.5 mile trail run, two aid stations with Tailwind, and support for local youth track programs.

A community trail run and walk around Jordan Lake starting and finishing at Lakewood Middle School, featuring a 5K route, age group awards, and packet pickup at the Lake Odessa Fair with race day pickup available.

InHouse Ultra is a last one standing treadmill competition for 33 athletes held inside Run Unlimited and Twenty One Run. Competitors run five miles every hour and must complete each set to stay in the race.

A trail run at Howelsen Hill with 5K and 10K singletrack courses featuring significant early climbs, an aid station on the 10K, and a post-race awards celebration at Little Toots Park.

Trail races near Burgdorf Hotsprings in Payette National Forest on June 27, 2026 offering 50K and 30K courses on alpine singletrack. The 30K is a clockwise Bear Pete loop with about 3,500 feet gain while the 50K adds Crystal Mountain climbs..

Trail races at Wolf Road Woods on June 27, 2026 offer three loop choices covering 3, 6 and 9 miles with varied off-road surfaces, tiered registration fees and post-race refreshments and awards.

Night Owl 9k at Freedom Park in Williamsburg VA is a mixed-surface trail race with single track, fire road and paved sections, rolling hills and technical terrain. Walkers are welcome and all finishers receive medals.

Operation HAYSTACK is a half marathon in Nederland, Colorado on June 27, 2026. The course covers 13.1 miles with 4,226 ft of elevation gain and the listed entry price is $105 plus tax.

A ruck style trail event at Crystal Mountain Resort on June 27, 2026, offering three distances with a 20 lb dry load and elevation gains listed up to 5,629 ft.

A 10 miles out-and-back event at Smith Mountain Cooperative Wildlife Management Area in Sandy Level, Virginia on June 27, 2026. Three load options are available: LIGHT 10 pounds, STANDARD 25 pounds, and HEAVY 50 pounds.

A weekend of Spartan obstacle races at Carter and Stevens Farm in Barre MA featuring a 5 km Sprint with 20 obstacles and a 10 km Super with 25 obstacles. The program also includes a kids race and an obstacle workshop.

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.

Trail races at Bridger Bowl on June 27 include a technical 20K and a two loop 5 Mile junior race; both use chip timing and include a catered lunch and awards, with cupless aid stations on course.

A chip timed trail run on the Crown Z Trail beginning at Ruley Trailhead in Scappoose, Oregon. Distances include 5K, 10K and a half marathon with shuttles from Scappoose High School and limited spots available.

Mud Factor Eugene is a mud-based 5K obstacle run at Eugene MX Park in Junction City on June 27, 2026. The event includes Kidz Family and Adult waves, a festival area with a spectator fee, and required signed waivers.

A three-race trail series near Glenwood Springs, Colorado, running June 27 to September 19, 2026, with 5k, 10k and half marathon options, bib pick up at Sunlight Mountain Resort and one aid station on the half marathon course.

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 3.1 miles moonlight trail run at Lakeside Park in Pawling, NY with varied terrain, glow markers, required personal light, post run towel and a handmade finisher medal. Proceeds support the Pawling Recreation Department.

Alderfer 5K Trail Race at Alderfer Ranch in Evergreen Colorado is a 5 km trail event with shuttle service from Wulf Rec Center. The course is cup free with no aid stations, and water and refreshments are available at the venue.