Trail Running Calendar United States 2025-2026

Take on the rugged Sehgahunda Trail Marathon and relays at Letchworth State Park on May 16 with the Vale of Three Falls races on May 17. Expect technical singletrack, big climbs, handmade finisher medals and a true trail weekend.

Cruel Jewel 50 is a 57.5 mile point to point trail through the North Georgia Mountains with about 17,000 feet of climb and descent. Technical single track, ridge lines, a historic Toccoa River steel bridge and epic views await.

The Trails To the Sky 50k will take place in Glen Gardner on Saturday 16 May 2026. You can run between 10 and 50 kilometers.

Run the inaugural Badlands Race Series at Island Lake Recreation Area in Brighton MI on May 16 and 17. Night and day trail races include Nightfall 50K, Overnight 100K of two loops, and Daybreak 50K with tech hoody and finisher medal.

Run Sand to Serengeti at Green Lakes State Park on May 17, 2026. Choose a 10 mile challenge or a 3 mile lakeside loop starting on the sandy beach and winding through scenic Serengeti trails. Expect prizes, a raffle and community energy.

Run The Farm is a scenic 5 mile trail race at Muscoot Farm with fun kids races for younger runners. Finishers receive Farm Bucks to spend at the Muscoot farmers market and event shirts are available while sizes last.

Run the Vale of Three Falls at Letchworth State Park on May 17, 2026 with 5K, 10K or 15K routes that follow a scenic service road overlooking the Genesee River. Expect rugged terrain, big hills and post race refreshments.

Join the inaugural Loop the Lemur at Ross Park Zoo with 6 hour, 2 hour, and 1 hour events plus a kids fun run around a scenic 0.8 mile loop. Finishers get custom shirts and medals and proceeds support lemur conservation.

Race a rugged 10K on May 17, 2026 through classic central Texas singletrack, slickrock and cactus at Reveille Peak Ranch in Burnet. Part of the Spartan Trail weekend, this scenic technical course delivers trail vibes and festival energy.

C'mon Armageddon brings technical trail running to Norvin Green Park in West Milford, NJ with 50K, 10 mile and 5 mile routes through boulder fields, river crossings and steep climbs. Expect rugged singletrack and a raw mountain challenge.

Run the 10K Spartan Trail at Big Bear Lake on singletrack through high altitude pine forest with technical climbs, descents and sweeping Sierra views. A scenic, challenging mountain course that joins a Spartan Trail weekend of adventure.

Run through New River Gorge National Park to finish in historic Thurmond, WV. Choose from 50 Mile, 50K, relay or virtual options and enjoy rugged trails, stunning views and a scenic train return from the finish.

CityTrail Loppet is an urban trail run through Theodore Wirth Park with 5K, 10K and 10 Mile options, all finishing together at the Minneapolis Sculpture Garden. Enjoy mixed trail scenery, finish line music and food, and a complimentary beer..

Infinitus runs May 21 to May 30 in Ripton, Vermont, set among the Green Mountain National Forest. Choose distances from 9 miles to 551 miles and enjoy dorms, camping, a dining hall and pool for a true ultrarunning adventure.

Recharge your trail legs with a small group spring camp in Oliverea, NY, in the Catskills. Tackle technical scrambles and big climbs while getting on trail coaching and mental performance work to sharpen your skills and confidence.

High Hope Endurance Run invites you to Memorial Day Weekend on classic Texas Hill Country trails at High Hope Ranch, with distances from 5K up to a single day 200K ultra. Enjoy well marked courses, round the clock aid, camping and finisher..

Feel The Burn Trail Runs invites runners to tackle hilly single track in Burns Park, North Little Rock, with distances from a 50K to a 10K ruck plus a free kids 1 mile fun run. Expect rocky, rooty trails, aid stations, finisher medals and a..

Run the rugged trails around Snowshoe Village at West Virginia Trail Fest, with races from a 1 mile kids run up to 100K through scenic Monongahela National Forest. Expect big climbs, sweeping views and festival fun across a lively May weeke..

Run the rugged Platte River bluffs at Calvin Crest this May with Crown of the Crest, from half marathons to a 100 mile epic and a two day Double Crown. Expect technical single track, big climbs, and looped aid at the start finish.

The Mills Miles - May 23, 2026 The Mills Miles is a Last Runner Standing format race held at Powder Mills Park in Pittsford, NY, with Race HQ at Powder Horn Lodge. The event uses a one-mile trail loop. Each loop is a mass start with a prede..