Trail Running Calendar United States 2026-2027

A 5K trail fun run through the hills of Butternut Valley in Garrattsville, NY on August 22, 2026, presented by Butternut Valley Alliance as part of the Butternut Valley Days celebration; registration fee is $35.

Trail half marathon in Evergreen, Colorado on August 22, 2026. The 11 mile course gains over 1,300 feet, tops out just under 9,000 feet, and runs through Elk Meadow and Too Long Trail from Buchanan Park Recreation Center.

A 5K trail race in Evergreen, Colorado on August 22, 2026, routed through lower Elk Meadow Park with course marshals. The event is cup-free, offers water refills at start and finish, and includes vendor tents and on-site food.

Trail races at Turpin Meadow Ranch in Jackson Hole on August 22, 2026 support the John Wayne Cancer Foundation. Distances include 30K, Half Marathon and 8K with packet pickup at Red Cliffs Lodge and shuttle service to the start.

Loop based trail event at Cliff Cave Park on a marked 3.1-mile (5K) loop with a stocked aid station and varied terrain by the Mississippi River. Distances range from 5K to 50K and athletes may stop after any completed loop.

Continuous 40 or 50 mile loop racing on a 3.1 mile trail at Cliff Cave Park with a fully stocked aid station each lap and a 12 hour cutoff. The course features wooded hillsides, limestone bluffs and Mississippi River overlooks.

A trail ultramarathon at Prospect Acres Ranch where runners complete repeated 2.2 mile laps in 2, 4, or 8 hour formats. Field camping is available Friday evening and registration is $40 with proceeds supporting future events.

Timed loop event in Paul Smiths, NY with six hour, three hour, and one hour options on an approximately 4 mile natural surface loop. The festival includes live music and food alongside the race.

An Alice in Wonderland themed night event at Echo Canyon State Park featuring a 1.8 mile reservoir loop and multiple unusual race formats from timed loops to dice-based team runs.

A high-elevation, approximately 100-mile out-and-back ultramarathon in Leadville, Colorado, featuring Hope Pass and over 15,000 feet of climbing. The event uses an entry lottery and includes 11 aid stations, pacer allowance, and buckle awar..

A 5K and 10K event at Leopold’s Preserve in Broad Run on August 23, 2026, offering in-person and virtual options and included in the Sippin Series with the Farm Brewery at Broad Run.

A trail running festival at Thacher State Park on August 23, 2026, offering **10K**, **13.1M**, **26.2M** and **50K** courses that share the same first 10K loop. The cupless event has multiple aid stations, post-race food, and medals for ma..

Trail race at Paul Douglas Forest Preserve on August 23, 2026 offering approximate 4, 9.5 and 13 mile courses. Part of the Dick Pond Athletics Darn Tough Trail Race Series with proceeds benefiting Chicago Area Mountain Bikers.

A women-only 5K obstacle mud run at North Carolina Motorsports Park on August 23, 2026, featuring 18+ obstacles and open to participants aged 7 and up. The event emphasizes fun and teamwork rather than competition.

A trail event at Granite Beach on August 23, 2026 offering 5K and 10K courses for runners and their dogs, with finisher medals and dog bandanas; aid stations provide drinks and gels and dogs have their own water.

Run through the scenic reservoir lakes and forests of Pennsylvania on a fast and flat trail course. Support clean water initiatives while enjoying an out and back race in the beautiful Roaring Creek Tract.

A 5K cross-country race at Waters Farm in Sutton, MA, marking the fourth running of the Old Goat Track Club XC Classic with on-site parking, finish-line water and fruit, portable toilets, and awards for individual and team results.

Experience an engaging 8 mile trail race through the winding singletrack of Fredericksburg. Navigate rolling hills and punchy climbs in this focused event supported by the local running community.

On August 23, 2026 Raptor Ridge stages a 6.5 mile trail race at Westmoreland Sanctuary in Mount Kisco, New York. The event starts and finishes at the Fox Lane High School campus, dogs are not allowed and non perishable food donations are co..

Black Diamond Express on August 23, 2026 features a 5K and a USATF certified half marathon along the Lehigh Valley Trail near Mendon, supporting the Mendon Foundation and trail maintenance with Monroe County Parks.