Trail Running Calendar United States 2026-2027

A mountain trail event at Harriman State Park on April 3, 2027 offering a half marathon, a 10K and a 10K ruck on rugged technical trails with significant elevation gain. Entry is capped at 400 and proceeds support trail maintenance.

Sleeping Giant Trail Runs at Sleeping Giant State Park in Hamden CT features a 25K loop with 3K+ of vertical and a 50K two-loop option. The course mixes technical singletrack and carriage roads, includes aid stations, and follows a cupless..

A multi-distance trail event at Lake Pleasant Regional Park featuring Waddell Dam crossings, desert single-track trails, and a 40K course with Yavapai Point views plus a short guided raft crossing with life vests provided.

A trail running event on April 4, 2027 with marathon, half marathon and 10K on the Arizona Trail, cupless aid stations with Skratch Labs hydration, shuttle buses to start lines, and finish line food, drinks and live music.

Trailbreaker returns to Waukesha on April 4, 2027 with races from a 1K kids run to a full marathon, plus ruck options and a walk. Proceeds support the Park Foundation of Waukesha and local parks and recreation.

A multi event trail and ultra running series across Maricopa County regional parks from October 2026 to April 2027, offering distances from 2 miles to 50 miles and series pass options with a discount.

A weeklong track ultramarathon at Cooper River Park with events from 6 hours to 144 hours on a USATF-certified 399.519 m track, chip timing, catered meals, vegan-friendly aid, and awards for milestone distances.

A three day trail running festival in Fruita, Colorado with four distances, desert and Colorado River views, and races that qualify for the UTMB World Series Finals and Western States Endurance Run.

A loop trail event at Broxton Bridge Plantation featuring a 3.3 mile loop, a 34 hour race, and a Last Man Standing format with primitive camping included.

Trail running event in Wildwood, Missouri taking place April 9 to 11, 2027, with distances from a free kids fun run up to 100M. The event follows a cup-free, zero waste policy and partners with the Trail Mix Fund.

A team trail relay on April 9-10, 2027 at Georgia International Horse Park covering 126.4 miles with team formats from three to eight runners, camping village activities, and glamping options. Trails follow single-track through pine forest..

A two-day obstacle course event in Tuscaloosa on April 9-10, 2027, with 20+ obstacles including a Marine regulation O-Course. The program includes competitive, open, team, and multiple children's race categories.

A Moab trail race offering 10K, 15K, and 25K routes through Kane Springs Canyon and Amasa Back with petroglyphs, Whale Rock, Colorado River views, cupless aid stations, and race-day packet pickup.

Full and half marathon trail races at the Whitewater Center in Charlotte on April 10, 2027, featuring marked courses, aid stations, packet pick up the day before, and age group awards.

A sunset road race in Sabino Canyon near Tucson offering a **7.4 mile** out-and-back on the paved tram road and a **2 mile** fun run. Online registration is capped, all entrants receive a shirt, and finishers in the longer distance receive..

A turtle themed 5K at Hopkins Farm Brewery in Havre De Grace raising funds and awareness for the Susquehannock Wildlife Society. The trail race includes wooden participant medals, costume prizes, and an after party with live music.

San Diego Spartan Event Weekend at Pala Fox Raceway on April 10 and 11, 2027 features a 5 km Sprint, a 10 km Super, kids races, spectator access, and a post-race festival with mud pits and rope climbs.

A trail event in New River Trail State Park offering 100K, 50K, 25K, 10K and a free untimed 5K on a flat, dirt out and back course with stocked aid stations, a cupless policy, and finish medals or a buckle for longer distances.

A 50K out-and-back on Pacific Crest Trail and desert tracks, featuring a steep 2,000 foot descent into Box Canyon and a long climb back up Oriflamme Canyon, with stocked aid stations and a 150-runner field.

A 5K trail run and walk at Blydenburgh County Park in Smithtown, NY with mixed trail surfaces, dog friendly rules, on site amenities, live results and proceeds supporting Last Chance Animal Rescue.