Trail Running Calendar United States 2026-2027

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 trail event in the Sierra Prieta mountains near Prescott, AZ, featuring a 50K distance and presented by The Hike Shack and Saddles 100.

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 ultraraces at Vogel State Park offer 100 mile, 40 mile and 40 km options on a high elevation ridge course with multiple support points and a mix of trail and forest road terrain.

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.

A one mile uphill race at Snow Summit in Big Bear Lake with a 1,000 foot climb starting near 7,000 feet elevation. The event raises funds for Big Bear High School cross-country through the BBHS Bear Backers 501(c)(3).

A six hour trail endurance challenge in Johnson City TX where runners complete a 5K every hour and must finish each lap within the hour to continue. Finish all six laps to earn the OUTLAST medal and national leaderboard ranking.

Experience the trails of Redwood Regional Park in Oakland. Runners can choose from distances ranging from a 50 yard kids dash to a 50K ultramarathon through scenic ridge lines and redwood groves.

A night trail event at Fontainebleau State Park with 5 and 10 mile options. Runners must carry a headlamp, whistle, and personal hydration; one aid point at the start finish provides water for refilling.

Experience the scenic trails of Iron Mountain at the Lake Antoine Classic. Choose between running, walking, or cycling distances in this community event supporting the Special Olympics.

A 3.1 miles obstacle course through Thomas Jefferson’s Poplar Forest with elite, team, corporate and non-competitive waves. Entry fees support Poplar Forest education and elite competitors must complete all obstacles to qualify for prizes.

A volunteer supported non profit trail race of about 19.9 miles along the Bridger Mountains crest near Bozeman, Montana. The route is remote and technical with multiple aid stations, an application lottery for entry, and limited field size.

Trail races at New Glarus Woods State Park on August 15, 2026 include 16K, 8K, 5K and a free 1K kids run. Proceeds benefit Friends of New Glarus Woods State Park and awards include age-group prizes plus a 16K consistency award.

Experience a scenic cross country 5k along the wooded trails of the White River in Noblesville. Participants enjoy a timed race with rewards including local honey and medals for top finishers while supporting local food security.