Trail Running Calendar United States 2026-2027

O'Neill Park Trail Races in Trabuco Canyon, California, feature multiple trail distances on May 15, 2027. Registration opens December 1, 2026 and the event has a no-refund policy with rollover options if canceled for weather or fire.

A looped backyard ultra at Butterfield Trailhead with *4.167 mile* hourly laps in 4, 8 and 12 hour formats. Every lap is timed for live results, with finisher medals, a 50 mile beanie for 12 loops, and finish line food and photos.

A multi-loop trail event in Napa that uses Skyline Wilderness Park and Suscol Headwaters. Options include an approximately 50 mile solo route and a one-loop ~25 mile course, with cupless aid stations and limited crew and pacer access.

Rumble on the Ridge is a backyard ultra style last person standing race near Arena, Wisconsin, run on a 1 to 1.25 mile loop with 20 minute laps. The course reverses direction every four hours and includes 250 to 300 feet of elevation gain p..

Die to Run: Last Person Standing is an hourly endurance event in Muskogee where a live die roll sets each loop distance. Runners must complete each loop within 60 minutes and continue until only one runner can finish a final loop.

A mountain trail marathon and half marathon in Orem, Utah on May 15, 2027, featuring steep elevation gain and technical terrain, marked with pink and blue flagging and supported by multiple aid stations.

Trail races at Mueller State Park from 10k to marathon plus two 12 hour timed events that use colored ball draws to set loop sequences. All courses are single and double track with no pavement and feature an aid station.

Trail races at Drake Well Museum and Park in Titusville, PA offering 5 mile, 13 mile, a stacked challenge, and a youth 2 mile on trails in Oil Creek State Park.

Timed trail ultraruns in Mannsville NY on a 2.65 mile loop with 6, 12 and 24 hour options plus a 3 person team category for the 24 hour. Onsite camping, one main aid station, cup free policy, 120 runner cap.

Tackle the Tar is an annual 5K obstacle course and family fun day in Rocky Mount featuring a mud pit and 15+ obstacles. Proceeds support local college scholarships and a separate 1 mile kids race is offered.

Trail race in Lebanon, Indiana on 05/15/2027 offering 4, 8 and 12 mile options on paved rail to trail with wooded and open views. Community focused event with awards, post race refreshments, and inclusion of non binary competitors.

A multi-distance trail event at Mineola Nature Preserve with looped courses on mixed surfaces, on-course aid stations, and a separate 7K ruck category. The event is part of the Texas Ultra Series and includes medals and awards.

Stomp Out Suicide is a shaded trail run and walk at Withlacoochee River Park on May 15, 2027, offering 10K, 5K and 1 mile distances and focusing on raising awareness about suicide; participants receive shirts, snacks, and finisher awards.

A morning **5K** held as part of the Fair Hill Scottish Games on May 15, 2027, in Elkton, MD, with on-field entries accepted, an entry fee that includes admission, and cash prizes plus trophies for top finishers.

A supported gravel ride and half marathon at Vermejo Park Ranch on May 15, 2027, featuring multiple course lengths, aid stations, private ranch roads, and specific equipment rules including eBike and aero bar restrictions.

A nine hour timed trail ultra on a 2.2 mile loop through Roosevelt Forest in Stratford, CT. Entry is limited to 50 participants and awards go to the runners with the most miles by the race end.

A trail event in Lock Haven, PA on May 15 and 16, 2027 offering 47K, 25K run or ruck, and 10K run or ruck across technical and runnable single track with multiple aid stations.

A race day in El Sobrante with a half marathon, 10K, 5K and a hiker division through the hills of Wilcat Canyon; registration windows and fees vary by distance.

A fixed-time endurance run at Bixler Lake Park with 6, 12 and 24 hour options plus a four-person relay; the event honors service members and donates part of proceeds to FW22, a local veterans mental health charity.

The Don's Backyard Bbq 20k Trail Run Challenge will take place in Winder on Saturday 15 May 2027. You can run 20 kilometers.