Trail Running Calendar United States 2026-2027

A spring trail event in Sisters, Oregon featuring a 50K and a Half Marathon that start and finish at Village Green Park. The 50K includes 2400 ft of climbing and five aid stations; the half has 700 ft of climbing and two aid stations.

Trail races at Wildlife Prairie Park in Hanna City, Illinois with 5K and 10K loop courses on maintenance trails and single track. Day park admission is included and the event features awards, post race snacks, and volunteer opportunities.

An 8K run and walk through wooded trails at Lakeside Park in Piedmont, South Carolina on May 2, 2027. The soft trail course covers about 5 miles and features overall and age group awards plus new apparel and socks for the first 100 entrants..

Flat out and back half marathon and 10 km on the limestone Great Western Trail, hosted by Fox River Trail Runners. Registration fees and donations support three local mental health charities.

WausaUltra at Sylvan Park features a 4.167-mile mostly-trail loop offered as Limitless (repeated loops until one runner remains), Solo (one loop) and Double (two loops), plus a short kids' race.

A self-supported marathon at Canyonside Park Driveway in San Diego on May 3, 2026, presented as a non-race with no course markings or aid stations. Participants may crew or pace and can run any portion; a GPX file and restroom access near m..

Trail marathon and 10 mile on the Sag Valley Trail at Cap Sauers Nature Preserve in Palos Hills, IL, with wide horsetrail, notable elevation gain, and staffed aid stations along the routes.

Valkyrie Trail Race is a women focused trail event at Cheyenne Mountain State Park on May 9, 2026, offering distances from 4 miles to 50 kilometers across meadow, singletrack and rocky pine forest trails.

A timed half marathon through eight Napa Valley wine estates finishing in Yountville. The event includes a finish line Wine Village with live music and complimentary wine tastings.

A timed trail event at Valley Falls State Park featuring looped laps with significant vertical gain, two stocked aid stations, on-site facilities, and support for the Innocent Lives Foundation.

Trail races near Fort Collins offering 25 and 50 mile options on mostly singletrack through Lory State Park and Horsetooth Mountain Park, featuring about 5,500 ft or 11,000 ft of vertical gain, staffed aid stations, and marked trails.

A USATF-certified trail event in Lewes, Delaware on May 8, 2027 supporting Wounded Warriors and Homeless Veterans. Offers 5K, 10K and half marathon options with run, race-walk, and a 15 lb heavy march plus on-site exhibits and vendors.

A community trail run and hike on May 8, 2027 at the Point Arena and Stornetta Lands, co-hosted by ACORN and Pacific Community Charter School. Proceeds support the Students Protecting the Coast environmental education program.

The Trail To Recovery 5K will take place in Norman on Saturday 8 May 2027. You can run 5 kilometers.

The Camp Mountain Laurel Color Run & Trail Run will take place in Hamden on Saturday 8 May 2027. You can run 5 kilometers.

The Denfit Ultra will take place in Cape Vincent on Sunday 9 May 2027. You can run between 50 and 100 kilometers.

The 3 Days at the Fair - Augusta NJ will take place in Sussex County from Monday 10 May 2027 to Sunday 16 May 2027. You can run between 26 and 50 kilometers.

An obstacle race weekend at Reveille Peak Ranch near Austin on May 15 and 16, 2027, featuring trail and rocky terrain. Events range from a 5 km sprint with 20 obstacles to a 10 km super plus kids and endurance formats.

The The Bear Crawl OCR will take place in Morganton on Saturday 15 May 2027. You can run between 3 and 6 miles.

The Extreme Adventure Challenge will take place in Versailles on Saturday 15 May 2027. You can run 10 kilometers.