Trail Running Calendar United States 2026-2027

A 100 mile endurance run through William B. Umstead State Park in Raleigh, NC, with a 30 hour cutoff and a 50 mile option. The 32nd running takes place April 3-4, 2027; registration opens September 16, 2026.

A trail running event at Mount Diablo on April 3, 2027 offering 50K, half marathon, 10K and 5K options; registration includes a remote-runner option and BBQ ticket. Part of the entry fees support Save Mount Diablo's land preservation.

A multi-distance event at Shelby Farms Park on April 3, 2027 featuring 50 Mile, 50K, a 50K relay and a 10K. Proceeds support Cancer Kickers Soccer Club kits for children affected by cancer.

Trail races of 6K, 10K, 20K and 50K take place April 3, 2027 on the Rocks and Roots Trail at Alum Creek State Park near Lewis Center, Ohio. The event uses alternating looped trail courses, has tiered fees, and a no refund policy.

Trail race on Cline Butte near Redmond, Oregon offering a 20 Mile summit route with about 2000 ft gain and a scenic 15K with about 400 ft gain, featuring runnable sections, technical rocky trail, and wide mountain views.

Point to point runs on the Northern Kettle Moraine Ice Age Trail near Greenbush, WI. Options include 50K and 25K with aid stations, drop bag access for the 50K, and bus transport to the start.

A mountain trail Marathon and a 40 mile Challenge in Black Mountain, NC, with an optional summit segment for the first 250 runners who reach the Parkway turnaround within the cutoff. The course is mostly single track and rough gravel with m..

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.