Trail Running Calendar United States 2026-2027

A trail event at Riley Trails Park on August 15, 2026 offering a half marathon, 10K, and ruck divisions on wooded singletrack. Proceeds support the Egress Endurance Project for people pursuing recovery through endurance sport.

A trail 10k at Lexington Lake in DeSoto, KS, part of a six-race Tour de Trail series. Entries include a $5 donation to Urban Trail Co; courses are roughly 5.5 to 6.5 miles, cupless with water-only aid and finish-line snacks.

Trail races at Cheyenne Mountain State Park feature 5K, 10K and a 25K summit course with about 3,450 feet of elevation gain; the 25K is a Pikes Peak Ascent qualifier and the event raises funds for park trail projects.

Underdown Trail Races The Underdown Trail Races are grassroots trail runs and mountain bike races held on August 15, 2026, at the Underdown Trail system in Merrill, Wisconsin. The running events include a 60k, marathon, and half marathon. T..

This annual community event in Sun Prairie features a 5k race and a kids' fun run, with a course on neighborhood bike paths. Proceeds go directly to support the local high school cross country team.

The Watermelon Wobbler is a 5k trail run/walk/hike through scenic conservation land and a working farm. It features a varied off-road course and supports local agriculture. On-site parking is supplemented by a satellite lot nearby.

A trail 5k at Oak Mountain State Park featuring rugged terrain and significant elevation change. The event takes place on a Saturday in August. Registration is available.

The Running Wild 5K will take place in Roseland on Saturday 15 August 2026. You can run 5 kilometers.

This trail running event at Standley Lake in Westminster, Colorado features five distances from 5K to 50K on 100% dirt paths. The scenic courses offer varied elevation across the different race lengths. Bib pickup is available in Louisville..

A mountain trail event at Belleayre Mountain in Highmount, NY on August 16, 2026, offering a 25K and an 8K with hiking options, on-course aid, a zero carbon offset fee, and donations to The Catskill Center.

Beat the heat at the Summer Meltdown Half Marathon in O. P. Schnabel Park, San Antonio, on August 16, 2026. Choose from a kids dash up to the 13.1 mile half, enjoy on course aid, finish line snacks, great swag, and festive awards.

Event Overview The Tails & Trails 5K is an annual event taking place on Sunday, August 16, 2026. It features two separate race distances: a 5K run/walk and a Cat Walk 1K. Both events are open to participants of all ages. Pets are welcom..

The Leadville Trail 10K Run takes place in August 2026. This out-and-back 10k course shares the start and finish of the famous Leadville Trail 100 Run, traveling on paved and dirt roads high in the Colorado mountains. It features one aid st..

The Nitty Gritty Off Road Race at Red Lodge Mountain Resort offers tough, scenic loops on dirt roads and single track. Choose from solo marathons, half marathons, a hot lap, or a team relay. Expect steep climbs, no on course aid, and a welc..

A biannual mountain trail race on Mount Mansfield near Stowe, Vermont, covering about 11 miles and 5,000 feet of climbing over technical and exposed trails. Entry is capped at 70 and requires a recent qualifying time.

A cross country meet in New Bern, NC on August 17, 2026, featuring separate Girls and Boys 5K races at The Epiphany School with timing and results provided by Run The East, LLC.

A midweek trail 5k at Lory State Park in Bellvue, Colorado, presented as part of an August series. Chip timing, series points and awards, free vintage shirts for registrants, and pizza and beverages after each race.

A four-race trail series on Tuesday evenings in August in Lory State Park. Distances include 5K, 10K, and 12K routes with varying elevation. Pizza and drinks follow each race, with series awards at the end.

The Augúst in Helena, MT is the 58th running of a 5k trail race on a flat course. The no frills event has separate youth and adult 5k categories and raises funds for local high school cross country teams.

This two day trail run event at Idaho's Silver Mountain Resort features a 2 mile race on Friday and a 13k run/hike on Saturday. Participants ride the gondola to the start at the mountain top. The weekend also includes vendors and other reso..