Trail Running Calendar United States 2025-2026

The Huntsville Slam is a challenging endurance series hosted by the Huntsville Track Club in Huntsville, Alabama. It requires participants to complete four specific races between November and January: the Dizzy Fifties 50K, Rocket City Marathon, Recover from the Holidays 50K, and Mountain Mist 50K...

Rose Rock Trail Run is staged at the Crosstimbers Riding Area - North Gate Entrance, on Lake Stanley Draper in Oklahoma City. It features 5K, 10K, and 25K trail distances for runners and walkers of all levels. About 300+ participants navigate loops on groomed single-track trails of clay, sandstone,..

La Cuesta Ranch Trail Run takes place at La Cuesta Ranch, just outside San Luis Obispo, California, along Loomis Road. It features three distances—10 km, 20 km, and 30 km—run as one, two, or three loops on 100% dirt trail and ranch roads. The start/finish is at the historic ranch barn.The course is..

Vegas Polar Plunge, hosted by Triple Dare Running Co., is held in Henderson, Nevada at the Silver Springs outdoor pool (1951 Silver Springs Pkwy). Participants can run a 5k, a 1-mile kids’ run, or simply plunge into the cold water. The course traverses the Pittman Wash Trail, combining a scenic rout..

David's Trail Endurance Run is a challenging trail running event held in Mountain Home, Arkansas, along the scenic Lake Norfork in the Ozarks. The race offers three distances: 7K, 25K, and a demanding 50K course featuring over 5,000 feet of elevation change on a mix of single and double track trails..

Angela Ivory Memorial Trail Runs is an annual ultramarathon event held at Killens Pond State Park in Felton, Delaware. The race offers three distance options: a 50-kilometer, a 100-mile, and a 24-hour run, inviting endurance athletes to tackle different formats. The next edition is scheduled for Jan..

Florida Roots Trail Series: Fort Clinch, held in Fernandina Beach, Florida, invites runners to explore Fort Clinch State Park's canopied single-track trails. The event offers four distances—5k, 10k, 30k, and 50k—each designed as a runnable, challenging course that winds through the park's trail syst..

The Langlauf 10K Cross Country Ski Race is held annually at the Mount Spokane Nordic Ski Center in Mead, Washington, the premier cross-country ski area in the Inland Northwest. This traditional 10-kilometer race features wave starts to accommodate skiers of all skill levels and speeds. Celebrated as..

Calico Trail Run is held at Historic Calico Ghost Town and the Calico Mountains, about 10 miles north of Barstow, California. The event offers 30K and 50K trail courses through a rugged Mojave Desert landscape, highlighting the dramatic scenery of Calico’s historic mining district. It’s described as..

The Mt. Hollywood 12K Trail Run Hike will take place in Los Angeles on Sunday 25 January 2026. You can run between 5 and 8 miles.

Arizona Rocks! Half Marathon - 10K - 5K Trail Run is a StartLine Racing event at Paloma Community Park on North Lake Pleasant Parkway in Peoria, Arizona. The race offers three trail distances—half marathon, 10K, and 5K—with a virtual option for remote runners. Designed for both seasoned trail runner..

This ain't your Mothers 50k & Trail Marathon is an annual trail running event held in Middleburg, Florida, within the scenic Jennings State Forest near Jacksonville. The race features multiple distances including a 50K, trail marathon, 12K, and 7K. The courses traverse the diverse Pioneer Trail, kno..

La Llorona 10K Trail Run takes place at McAllister Park, Pavilion #2, San Antonio, TX. The 10-kilometer trail challenge invites runners of all levels to explore cactus-lined trails with wildlife sightings such as deer and armadillos. The event blends culture and sport, inspired by the La Llorona leg..

The Arrowhead 135 is a grueling 135-mile human-powered ultra marathon held in Northern Minnesota, running from International Falls to Tower along the rugged Arrowhead State Snowmobile Trail. Participants can choose to compete by foot, ski, or bicycle in one of the coldest and most challenging winter..

Dark Anchor is a multi-distance ultra hosted on Jekyll Island, Georgia, by the YETI Trail Runners. Runners choose from 25K, 50K, 80 miles, 100K, or 100 miles, looping a flat, soft 3.0-mile course around the island. The event operates under a 34-hour time limit, with a central aid station and a crew-..

The Devil's Shadow Winter Trail Races take place at Mendon Ponds Park in Honeoye Falls, NY, featuring 5-mile, 25k, and 50k distances. The event is part of the Common Ground Winter Trail Series, promoting winter trail running and community spirit. The course is a roughly 5.1-mile loop around Devil's..

Run for the Range Half Marathon takes place at Fall Creek Ranch in Granbury, Texas. The event also includes a 5K, 10K, and a Couch Conservationist option. Runners traverse about 1,500 acres of wide-open Texas landscape on dirt single and wide-track trails, featuring rolling hills and creek crossings..

Castlewood Cup returns for its 18th year on January 31, 2026, at Castlewood State Park in Ballwin, Missouri. The 15-kilometer trail race courses through Castlewood’s renowned single-track, offering a scenic mix of hills, switchbacks, and occasional flat sections. As part of the Big River Trail Serie..

HAROC (Hanging Rock Challenge) is a trail running event held at Hanging Rock State Park in Danbury, North Carolina. It features two race distances: a challenging 50K ultra with approximately 5,100 feet of elevation gain over 30.6 miles, and a 25K race covering 15.8 miles with about 2,800 feet of ele..

Frosty Fat Sass is a family-friendly trail party in West Orange, New Jersey, held at the Turtleback Rock Picnic Area in the South Mountain Reservation. It offers a 5K loop and timed options of 3 hours or 6 hours, plus a new Rucking division with lightweight (15 lb) and heavyweight (30 lb) packs. The..