Trail Running Calendar United States 2026-2027

Trail racing in the Loess Hills: a half marathon and a 5.3 mile fun run in Little Sioux, Iowa on May 16, 2026 with varied prairie, forest and ridge terrain.

Experience a rugged trail race at Green Mountain featuring significant elevation and scenic summit views. Choose between 25k and 50k distances or join the official rucking division for a unique weighted pack challenge.

A trail event at Pittsfield State Park offering 50K, 25K and a 5-mile loop with two aid stations and nearby camping; organized by BURCS and supporting three regional animal rescue groups.

A multi distance trail running event at Mt. Zion Bike Trail near Brookhaven MS, offering 5K, 10 mile, 20 mile and 50K courses on narrow, well marked singletrack with wooden bridges and staffed aid stations.

Cross country 5K at Cole's Family Farm in Dayton on May 16, 2026 supporting the Southern Maine Young Marines. Options include a 1.25K fun run and a 5K ruck march; entry includes a patriotic t-shirt and participation medal.

Experience cross country racing at Bells Mill Park with 5K and 1.5 mile events featuring grass and marshy terrain. Enjoy a post race afterparty with catered lunch boxes and finisher medals for all participants.

Experience an adventurous trail race in the heart of Paris Mountain State Park. Run the 12K course and take on the long climb to the top of the mountain for a unique running experience in Greenville.

Vanguard Mud Race is a 3 mile mud run in Ray City GA on May 16, 2026 with multiple heats and a youth option. Registrations support year round community programs and early registrants receive race gear and an event-day surprise.

This cupless 50k ultramarathon features a scenic 3-loop course through the limestone gorge of John Bryan State Park. Runners face a 9-hour cutoff but can opt for an early start. Registration includes a tech shirt, and all finishers receive..

Trail races in South Mountain Reservation on May 16, 2026, from 5 miles to 50 miles plus a Kids 1 Mile; looped courses, aid stations about every five miles, and volunteer-run proceeds support the Conservancy.

A point to point 50 mile ultramarathon from Manchester to Mount Monadnock with about 6000 feet of gain, mixed road and trail terrain, GPX only navigation, five aid stations, a 125 runner cap, and no organized shuttle service.

Explore the trails of Upland Hills Farm and Bald Mountain State Recreation Area. This school fundraiser features a 1-mile, 5K, and 10K run with student-made medals for all. Enjoy free snacks, a raffle, and a festive farm atmosphere.

Experience a scenic 6.1 mile trail race through the Big South Fork National River and Recreation Area featuring sandstone bluffs and waterfalls. This exclusive event is limited to 100 runners and offers over 1000 feet of elevation gain.

Test your limits at Horseshoe Lake State Park with an escalating weight endurance event. Complete multiple loops of a five mile course where the load increases every time until only one person is left.

Kick off the trail running season in Eagle, Colorado, with a 14K or 6K race through scenic pinyon groves and single track trails ending with a festive afterparty.

Experience the single track trails of the Issaquah Alps at Rattlesnake Ridge. Choose between 5k, 5.8 mile, or Half Marathon routes featuring forest climbs and scenic views of the Snoqualmie Valley and Mt Rainier.

Experience an adventure run at Snow Ridge Resort featuring a 5K course with 2000 feet of vertical elevation. Choose from individual races, team heats, or dedicated youth obstacle courses in the scenic Tug Hill Adirondack Region.

Test your endurance at Whispering Pines Park with a unique adventure race featuring a 5K run, swimming, and a Jeep push. Join as an individual or part of a team to support community wellness and educational initiatives.

Experience the spring blooms at Bristol Woods County Park during this hilly trail run and hike. Support local environmental education while navigating scenic dirt paths through the Pringle Nature Center.

Experience a local themed race in Indianapolis with distances ranging from a Kid's Dash to a Half Marathon. Enjoy chip-timing, finisher medals, and treats at the finish line for a complete event experience.