Trail Running Calendar United States 2026-2027

The DINO Trail Run at Southwestway Park takes place August 15, 2026 with 5K and 15K trail courses overlooking the White River. Entry includes a free kids run and awards for overall and age group finishers.

A mostly dirt and trail race along Boulder Reservoir in Boulder, Colorado, with about 200 feet of elevation gain. Distances range from a 10K to a full marathon, plus a relay option.

Experience a fun 5K obstacle course filled with mud pits and slides at DREAM Park. Enjoy a pre-race DJ sets and a lively after-party with food and music in a family-friendly atmosphere.

Trail ultras from Roxborough State Park to Sharptail Trailhead featuring sustained climbs, technical singletrack, and a long runnable finish, with full aid support and an emphasis on land stewardship.

An ultramarathon in Lockport, NY along the Erie Canal Towpath offering 100, 50 and 25 mile options. The race starts at Wide Water's Marina, features multiple staffed aid stations, and offers a Double Beast Buckle for completing both winter..

Trail races in Fahnestock State Park near Cold Spring, NY on August 15, 2026 with 50K, 25K and a 5.5 mile option, multiple aid stations, a post race meal and proceeds supporting park conservation.

A lakefront loop ultra at Fort Loudon State Historic Park near Vonore TN offering 3.65 mile laps in 3, 6, 12 and 24 hour formats plus a 6 hour ruck and awards including a $500 prize for beating the 24 hour course record.

Trail races at Angel Fire Resort include a 5.2 mile ascent to the summit with a free lift descent and a 10.4 mile up and down Mountain Classic the next day. Singletrack courses are marked with yellow flagging.

Experience a technical mountain race in Palmer featuring a 5000 foot vertical gain over 8 miles. Navigate steep ridges and alpine tundra from Government Peak to the historic Independence Mine in this point to point Alaskan challenge.

A 10 km trail race at Battelle Darby Creek Metro Park through prairies, fields and riparian forest. ORRRC members run free while non-members pay a modest fee; check-in with a timing chip is required and service dogs only are permitted.

Night Claw is a night trail event in Glen Rose offering 4M, 10K, 10K ruck and timed 4/6/8 hour races on dirt and rocky single-track. An optional Claw Challenge adds a tear-tag chase where finish tags determine beat or clawed status.

A community running event in Vian, Oklahoma on August 15, 2026 offering a 5K trail run, a 1K paved fun run/walk, and a virtual 5K available through August 22.

Hill of a Race 2026 in Bloomington, IL combines a lap based Endurance Challenge with multiple 3 mile obstacle course waves, including competitive men, women, masters and several recreational waves.

A 50K ultramarathon in Marin County on August 15, 2026, running iconic Coastal, Miwok, Matt Davis and Dipsea trails with about 6,600 feet of elevation gain. Part of the USATF PA Grand Prix and offering a $10,000 podium purse.

Test your endurance at Ferncliff Camp with a multi loop trail race near Little Rock. Enjoy a post race cookout and pool access after navigating inclines and water crossings across various distances.

A 5K and a 1 mile run and walk on the Pennsy Trail in Greenfield, IN, held at Sister Cities Park next to the police department. The course is an out and back along the trail and race and volunteer registrations have set dates and fees.

A two-person relay on the Ozark Trail that combines running, mountain biking and paddling through the Mark Twain National Forest, offered in roughly 33 mile and 55 mile formats with on-course aid and supplied paddles.

Test your endurance at Prairie du Chien's first backyard ultra featuring a 4.167 mile trail loop through La Riviere Park. Run one lap every hour until only one participant remains or enjoy a relaxed one lap fun run.

A 25K trail race in Cook Forest State Park on Aug 15, 2026, featuring a loop of thirteen interconnected trails, riverfront sections, and the Cook Forest Fire Tower. Three aid stations are staffed by local high school teams.

A trail event in Holland MI offering half marathon, 10K and ruck options on the Riley Trails. Proceeds support the Egress Endurance Project and aid stations are placed about every four miles.