Trail Running Calendar United States 2026-2027

A trail event at Sleepy Hollow State Park using a 4.167 mile loop with a single-loop option and a 12 hour backyard ultra that records hourly laps, uses chip timing, and requires a headlamp for night laps.

A community focused, donation based 36 hour trail event at Catamount Outdoor Family Center in Williston, VT. Runners repeat two loops of about three and four miles and are asked to volunteer a short shift and bring a snack.

The 5th Annual Mackyard Ultra is an ultramarathon hosted by the Baltimore Road Runners Club at Shawan Downs in Cockeysville on October 31, 2026. Entry is $20 and the field is limited to 100 runners with pre registration on RunSignUp planned..

Trail running event at Cane Creek Park in Waxhaw, NC with distances from 4 miles to 50K, aid stations on course, included cookout lunch, and awards for top three overall in each distance.

A Halloween morning trail race in Swan Valley, Idaho offering a 50K with 6,000 ft gain and a half marathon with 2,700 ft gain. The course runs on Fall Creek Road near Rainbow Valley Ranch and is close to Idaho Falls.

A community 2.5-mile trail run at Thorne Head Preserve supporting local trails and education, featuring river views, a short technical section, no official timing, and a fall finisher's breakfast with a commemorative mug.

A costumed 5K trail run on October 31 2026 at Wells Reserve at Laudholm. Timed course with water stations and awards, with proceeds supporting coastal conservation and restoration.

A Halloween-themed 5K and 1 Mile at Arasapha Farms in Glen Mills that benefits the Edgmont Township Fire Company No.1, with timed 5K results, commemorative shirts, safety costume rules, and a monster costume contest.

A Halloween event in Philippi WV offering a rugged 5K with trail obstacles and a separate 1 mile fun run. Runners use flag belts while actors portray zombies along parts of the trail.

A Halloween themed community run on October 31 at the trail at the Epic in Grand Prairie. Options include a 5K, a 1 mile fun run, a volunteer then run option, and a costume contest with a prize.

Outlast Cleveland is a 6 hour trail endurance challenge in Garrettsville, OH where runners complete a 5K every hour for six rounds. Finish all six to earn the OUTLAST medal and a place on the national leaderboard.

The Sand Harbor 5K and 10K will take place in Sand Harbor on Saturday 31 October 2026. You can run between 5 and 10 kilometers.

A community event at Strawtown Koteewi Park with a live 5K, 1 mile walk and a virtual challenge, timed live races, participant t-shirt and medal, and proceeds benefiting the Hamilton County Sheriff’s Office Community Foundation.

The Harvest Trail Running Festival will take place in Farmersville on Saturday 31 October 2026. You can run between 5 and 50 kilometers.

A Halloween themed 5k and 10k through historic downtown Erie and Coal Creek trails, with a kids Goblin Run and BOLDERBoulder qualifier status. The event supports the Erie Optimist Club as its primary fundraiser.

Trail races at Mounds State Park with 5-mile, 5K run, 5K walk and a kids 1-mile fun run. Courses are mostly trail with two water stops, chip timing on bibs, midday packet pickup, and post-race food and medals.

Trail races on the Rocks and Roots Trail at Alum Creek State Park on November 1, 2026, offering 10K, 20K, and 50K distances with tiered registration fees and a no-refund, no-bib-transfer policy.

Run a scenic 3.2 mile trail race around Lake Walden to support the Hartland Area Project. Enjoy a historic resort setting with old school timing and post race raffle prizes for all participants.

Trail race in Little Orleans, Maryland on November 1, 2026 offering 25K and 50K courses on mixed trail and road terrain, multiple aid stations, official cutoffs, training runs, and a series reward program.

A fall trail event at Woldumar Nature Center in Lansing on November 1, 2026 featuring a 5K and a free 1 mile Muskrat Mile, with natural-surface trails and proceeds supporting outdoor science education.