Trail Running Calendar United States 2026-2027

Hill of a Race 2026 in Bloomington, IL combines a lap based Endurance Challenge with multiple 3 mile obstacle course waves, including competitive men, women, masters and several recreational waves.

A 50K ultramarathon in Marin County on August 15, 2026, running iconic Coastal, Miwok, Matt Davis and Dipsea trails with about 6,600 feet of elevation gain. Part of the USATF PA Grand Prix and offering a $10,000 podium purse.

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 on the Ozark Trail for two-person teams, combining trail running, mountain biking and paddling through the Huzzah area and Meramec waterways. Proceeds benefit 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 on August 15, 2026 in Cook Forest State Park featuring a 17 plus mile loop across 13 trails, a climb to the Cook Forest Fire Tower, riverside sections, and three aid stations staffed by local high school teams.

Trail runs and ruck challenges on Riley Trails in Holland, MI on Aug 15, 2026 with multiple distances and aid stations every four miles. Proceeds support the Egress Endurance Project and packet pick up is at Benjamin's Hope.

A 10k trail race at Lexington Lake near DeSoto, KS, part of the Tour de Trail series. A portion of each entry supports Urban Trail Co; the event uses clock timing and is cupless so runners must carry their own hydration.

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 5K off-road trail run, walk, and hike at White Barn Farm through Wrentham conservation land. The event is part of the Farm to Trail 5K Series and raises funds to support local agriculture and food pantry donations.

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.

A fundraising mountain bike and trail running event at Big Hill Trails supporting Northern Hills Area CASA. Riders and runners complete as many laps as possible in three hour or six hour formats on looped courses with aid stations and campi..

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.

Westminster Trail Race at Standley Lake in Westminster, Colorado offers five dirt-trail distances from 5K to 50K with lake and Front Range views on out-and-back and Y routes.

A 50K trail run near Prescott, AZ that covers 31.5 miles and about 5,500 feet of climbing, passing Thumb Butte, Quartz Mountain and Wolverton. Aid stations are at miles 6.5, 15 and 23 and a 3 MPH cut off applies.

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.

Trail races at Vogel State Park with 100-mile, 40-mile, and 40 km options on the Duncan Ridge. The course uses multiple support points, has notable elevation gain, and the shortest distance avoids nighttime running.