Trail Running Calendar United States 2026-2027

Run the scenic Tomorrow River Trail half marathon from Plover to a festive finish at Central Waters Brewing Co in Amherst. Enjoy over nine miles of trail and secure a guaranteed t shirt by registering by May 3.

Celebrate the 1980s at Running Through the Decades in San Antonio with an 80s playlist, pre race costume contest and a fun half marathon plus 5K, quarter and kids runs. In person and virtual options, medals and shirts for all.

Trail races at Sherwood Archers in Carvins Cove on May 31, 2026, offering a 25k and a marathon plus virtual options. The marathon features about 3500 feet of climbing, eight aid stations, technical shirts, and finisher awards.

Run the Billings Skyline Races for a scenic challenge along the Rimrocks and Skyline Trail. Choose a rolling 13.1 mile loop or a longer 30K that adds elevation, with panoramic views of the Yellowstone Valley and Beartooth Mountains.

A grassroots trail half marathon in Sky Valley, GA on May 31, 2026, offering official timing only with no shirts or awards. Registration closes May 27; day-of cash entry is allowed for $45.

Run the 11th Annual Paper Chase 5K in Lansing on May 31 for a scenic out and back along the Lansing River Trail with chip timing and live results. Proceeds benefit Michigan Capital Region Big Brothers Big Sisters.

On May 31, 2026 this event in Knoxville combines SwimRun team and individual races with trail-only 5k and half marathon options, using course routes through Mead's Quarry and Ijams Nature Center in the Urban Wilderness.

The Live Free Fun Run and Festival will take place in Woburn on Sunday 31 May 2026. You can run 3 miles.

Join the XC Summer Series, a friendly weekly cross country 5K on Tuesday nights in Parsippany from April 28 to September 1, 2026. All ages and abilities welcome, walkers included, with chip timing and after race refreshments.

Celebrate the 10th Big Run Roanoke on June 3 at Fallon Park with a nationally timed 5K along the Tinker Greenway and a free kids fun run. Join the community, support Smiles4Tab, and secure your spot early for guaranteed swag.

A multi day endurance series at Mohawk Mountain in Connecticut offering solo and team trail events from 15 to 152+ miles with timed formats up to 84 hours. Tenting, support stations, and personalized bibs and medals are provided.

Looped trail races on the Jericho Horse Trail in Francis Marion National Forest offering distances from 10k to 100 miles. The course is flat, can be hot in June, and features three aid stations, primitive camping, and night running rules.

A trail event at Morgan Monroe State Forest offering a 100 km race and a 20 mile loop with generous time limits and aid station support. Virtual entries are allowed between May 1 and June 7 with GPS submission and mailed finisher swag.

A weekend trail ultramarathon near Pocatello, Idaho offering four distances from 23 miles to 100 miles with substantial elevation gain; the event highlights environmental stewardship and reserves at least half the field for women, femme and..

Run the Wolf Creek Trails for the Howlin' Trails 5K or 10K on June 5 in Fayetteville WV, starting at Bridge Brew Works. Enjoy chip timing, finisher perks, and family fun while supporting Active SWV Kids Run Clubs.

A point-to-point ultramarathon on the New England Trail offering 112-mile and 50-mile options to Guilford. Entrants must make a donation to the Connecticut Forest and Parks Association and arrange their own crew and navigation.

Trail ultras on the Virginia Creeper Trail offering a 50 mile, a 55K, and a 25K Pepsi Challenge with crushed gravel surfaces, aid stations, crew access points, cupless racing rules, and USATF certification for the 50 mile.

A remote trail event in Tiadaghton State Forest offering a 25K and a Half Marathon that share a nine mile section through technical single track, streams, and scenic viewpoints; registration opens December 16, 2025.

Join Hanson Hills Challenge Trail Run in Grayling MI on June 6, 2026 for a hilly 5 mile race or an easier about 3 mile route that welcomes walkers. Custom socks while supplies last and online registration closes June 5.

Trail races in Dillon, Montana on June 6, 2026 include a 15k, 5k, kid's 5k and one mile fun run. Courses are off pavement through sagebrush hills with extensive single track and significant climbing.