Trail Running Calendar United States 2026-2027

An annual single-loop 50K ultramarathon in Muir Beach, California, traversing famous Marin trails with about 6,500 feet of elevation gain and ocean and Bay Area views.

Test your endurance at Ferncliff Camp with a multi loop trail race near Little Rock. Enjoy a post race cookout and pool access after navigating inclines and water crossings across various distances.

A 5K and a 1 mile run and walk on the Pennsy Trail in Greenfield, IN, held at Sister Cities Park next to the police department. The course is an out and back along the trail and race and volunteer registrations have set dates and fees.

A three leg relay for teams of two on the Ozark Trail combining trail running, mountain biking, and paddling. Short and long course options are offered and proceeds support the Ozark Trail Association.

Test your endurance at Prairie du Chien's first backyard ultra featuring a 4.167 mile trail loop through La Riviere Park. Run one lap every hour until only one participant remains or enjoy a relaxed one lap fun run.

A 25K trail race in Cook Forest State Park on August 15, 2026, featuring a multiple trail loop with a climb to the Cook Forest Fire Tower and riverside sections. Three aid stations are staffed by local high school teams.

Trail races and ruck events at Riley Trails near Holland, MI on August 15, 2026, with half marathon and 10K options. Proceeds support the Egress Endurance Project for addiction recovery.

A 10k trail stage at Lexington Lake in DeSoto, KS, part of the six-race Tour de Trail series, with $5 of each entry donated to Urban Trail Co. The event is cupless with water-only aid and offers podium awards plus a handmade finishers award..

Experience the trails of Cheyenne Mountain State Park with three race distances ranging from a 5K walk to a 25K mountain challenge. This chip timed fundraiser supports park conservation through scenic and high elevation courses.

Underdown Trail Races in Merrill, Wisconsin on August 15, 2026 offer backcountry singletrack running and mountain biking across distances from a half marathon to 111 miles. Courses are well marked, supported by aid stations, and proceeds su..

A community 5K and a kids 1 mile fun run at Token Springs Elementary on 08/15/2026. The mostly bike-path out and back course runs through The Reserve neighborhood and supports the Sun Prairie West Cross Country Team.

A scenic off-road 5K at White Barn Farm through conservation land with a midway water station and marshaled course. Proceeds support the farm and a donation to the local food pantry.

A trail 5K at Oak Mountain State Park on August 15, 2026, starting at the North Trailhead. The course features singletrack, rocky top-outs and technical downhills with about 1,100 feet of elevation change over 3.1 miles.

Test your endurance at Big Hill Trails with a 3 or 6 hour mountain bike race or trail run. Support child advocacy in South Dakota while navigating flowy single track loops through the scenic Black Hills National Forest.

A 5K chip-timed run and a 3K scavenger-hunt walk through St. Patrick's County Park featuring trail terrain, participant medallions, post-event refreshments, awards by age group, and proceeds that support park programs.

A trail race at Standley Lake in Westminster, Colorado offering 50K, 35K, Half Marathon, 10K and 5K on packed dirt trails with lake and Front Range views. The event includes on-site music, drop bag areas, and live split tracking.

A late summer 50K through the Sierra Prieta mountains near Prescott, AZ, on August 15, 2026. Presented by The Hike Shack and Saddles 100 with registration closing August 13.

Experience a rolling cross country run through the forests and meadows of the Landis Arboretum. This sanctioned 5K race offers views of the Schoharie Valley and access to scenic trails and gardens.

Bryre Dragon at Vogel State Park offers three trail races over the Duncan Ridge with multiple aid points, landmark cutoffs, and time limits for each distance.

A looped trail event at Sunfish Lake that combines timed 2.6 mile laps with a bingo card mechanic. Runners choose a 3x3 or 4x4 card and draw after qualifying loops to try to complete bingo while logging time and distance.