Trail Running Calendar United States 2026-2027

A backyard ultra in Knoxville, Maryland where runners complete a 4.167 mile yard each hour until only one finishes. The event includes a 1-mile option, offers prize money for top finishers, and serves as a Backyard Ultra qualifier.

A trail running event at Point Pinole on May 30, 2026, offering a half marathon, 10K and 5K. The original Brazen Racing event welcomes runners and walkers and includes bib pickup, posted results, free photos and volunteer roles.

A multi distance running festival in Eaton, Colorado on May 30 to May 31, 2026 offering races from 7K to 100 Mile plus relay and timed events. The venue uses a 2 mile groomed loop and provides glamping and onsite amenities including sauna a..

A 5K trail event on May 30, 2026 at Danvers YMCA Camp in Boxford with separate courses for runners and for walkers and waggers, pond and vernal pool scenery, prizes, post-race treats, and registration benefits.

Trail races in Salt Lake City offering 50 miles, 50K, half marathon, and 10K courses through the foothills with substantial elevation gain; bib pick up the day before and prize money for the 50K and half marathon.

Echo Valley in Chelan, WA is a two day trail running weekend on May 30 and 31 2026 with a 1 mile kids race, 10K, half marathon and a Saturday 50K on single loop trails with valley views and pine forest.

A mountain ultramarathon near Denver offering 50 Mile and 50K options on mostly singletrack trails, passing 1996 burn areas, ponderosa pines, and granite formations. Part of the proceeds support the North Fork Volunteer Fire Department.

A spring trail event in the Angeles National Forest offering a 50k and a half marathon across Pacifico Mountain with technical singletrack, multiple aid stations and a finish festival. The 50k awards Sterling Silver Tickets and a course rec..

A Backyard Ultra held May 30, 2026, on an exactly 4.1 mile loop around Mantua Reservoir. Flat, firm-dirt trail with springtime scenery and repeated loops rather than a fixed total distance.

The Dormie Challenge is Portage County's first ultra marathon on May 30, 2026 at UWSP campus in Stevens Point. It offers 12 hour and 6 hour endurance events with limited fields, aid stations, timing, and medical support.

Trail event at Doe Mountain Recreation Area near Mountain City TN offering 50K, 25K, 13K and a free kids mile. Courses feature significant elevation and a 60 foot fire tower with panoramic views.

An 8K trail race entirely within Lincoln Memorial Garden near Lake Springfield with wood-chipped and gravel trails and plank bridges. A Kids Fun Run offers three pond-loop distances; the 8K is limited to 300 participants and includes a shir..

Experience a technical trail race through the redwood groves of Joaquin Miller and Redwood Regional parks. Choose from multiple distances ranging from an 8K to a 50K ultra marathon on accurately measured courses.

Experience the mountain trails of Park City at the Twisted Fork Trail Festival. Choose between three distances featuring scenic ridgelines, aspen groves, and a lively finish at the Newpark Amphitheater.

Trail races at Giant City State Park include a new 5k, a half marathon loop, and a 40k two loop option on mostly single track with creek crossings, aid stations, cupless format, and optional t shirts.

Angry Cow Trail Run / Obstacle Race at Rockford Lake features an approximately 4 to 5 mile trail with on-course challenges, two-person team racing and a rucking option. Registration includes a shirt, awards, snacks and drinks.

An ultraloop on a hilly 7.7 mile circuit with a strict two hour lap cutoff and self supported format. Laps alternate direction and top finishers receive shoes and per lap cash prizes.

Trail running events at A.W. Marion State Park along Hargus Lake shoreline, featuring a half marathon, 10K, 5K, 6 Hours of Power and a 20K relay across 310 acres of woodlands and native landscapes.

San Mateo PAL's May 30, 2026 community event at Seal Point Park features a 5K run/walk, a 10K run, a free Wellness Fair, and a yoga option. Race entries include a t-shirt and finisher medal, and vendor booths are available.

Muddy Dash in Oklahoma City is a 5K mud run with obstacles and waist-deep mud pits, plus a pre-party and an after-party with music, food, and beer at Lost Lake Entertainment Complex on May 30, 2026. Kids are welcome under event rules.