Trail Running Calendar United States 2025-2026

Take on the Summit for Life in Aspen on December 6, 2025 with options to race uphill, ride the scenic gondola, or join virtually. Celebrate afterward at the Sundeck with food, live music and awards.

Get festive at the Ugly Sweater 5K in Canajoharie on December 6, 2025, where runners and walkers hit the scenic Erie Canal trail in holiday style. All proceeds support the Community Youth Center and age group prizes add extra fun for racers..

The New Balance RunningLane XC Championships brings high school teams and community runners to John Hunt Cross Country Park in Huntsville on Dec 6, 2025. Race a fast single loop 5k on a spectator friendly course.

Run The Triple C at Woolly Hollow in Greenbrier Arkansas on December 6 for scenic trail courses of 10 miles, 4 miles and a 1 mile fun run through woods, falls and lakeside views. Celebrate a life and support a charitable mission while enjoy..

Join the San Clemente Santa Run on December 6, 2025 for a festive 5K or fun run along the beach, starting at the Pier Bowl. Celebrate with music, an auction and dinner while supporting Lily's Lighthouse and epilepsy research.

Trail run at Fountainhead Regional Park around the Occoquan Reservoir with a 4.8 mile loop and a 10.5 mile option. EX2 Adventures provides on course aid, post race food and swag and a kids race supporting Homestretch.

Run the iconic Hunter S. Thompson Fear & Loathing in San Francisco on December 7, a free grassroots single loop that winds past city landmarks and finishes at Twin Peaks. Choose 50 mile or 50K distances and help support Shoes For Runners.

Run the Topo Trail Marathon at East Fork State Park on December 7, 2025 with quarter, half and full options on a 6.55 mile singletrack loop. Enjoy aid stations, a race tee and a finisher medal on a scenic course.

Take on scenic, rocky single track through Pine Mountain at FDR State Park with 19 or 40 mile options for trail lovers. Organized by local runners, this long running event raises funds to support FDR State Park and Georgia State Parks.

Hit scenic, technical trails at the Dirty South Trail Races in Knoxville on December 7, 2025, featuring a half marathon, 10K and Kids Trail Mile through Ijams Nature Center and Ross Marble Quarry. Early registrants may receive a special tec..

Tackle scenic single track trails at Elfin Forest in the Keepin' It Rural 5K and 10K, where runners get chip timing and a festive post race party. Enjoy a tech shirt, finisher medallion and a beer while supporting Escondido Creek Conservanc..

Run a timed 50 miles or 50 kilometers in Prospect Park on a scenic looped course near Lincoln Road. Community aid with Skratch Labs hydration and a potluck style aid station keeps you fueled across the day.

Run coastal trails at Guana Reserve on Sunday December 7 2025 with 50K and 12K options plus team formats. Enjoy sandy singletrack, estuary views, and community camaraderie in beautiful Ponte Vedra Beach.

Celebrate the 20th anniversary of Wakeem/Teschner Nature Preserve with a scenic 5k trail run or family 1 mile walk at Resler Canyon in El Paso. Support land conservation while enjoying beautiful desert trails and community fun.

Join the Tidewater Strider Dismal Swamp in Chesapeake VA on Dec 7, 2025 for 50K, marathon, half marathon, relays and a walkers option on scenic out and back looped trails. Aid stations, finisher apparel and post race pizza and beer await.

Tough Cookie 8K at Sunken Meadow State Park offers scenic cliffside views of the Long Island Sound, festive cookie stops and a post race cookie fest. All paces welcome and proceeds support local charities.

Tackle scenic technical trails in Helen GA at the Helen Holiday Half Marathon on December 13 with half marathon and 10K options. Expect climbs, hiking sections and one aid station, plus a beanie, pint glass and medal.

Spirit of Syllamo returns December 13, 2025 near Norfork, Arkansas at Misty Mornings with a new venue and rugged, rocky trails. Choose 100 mile, 35 mile or 10k routes through remote forest and creek crossings for a true endurance trail test..

Beast of the East 100 at Crowders Mountain near Kings Mountain NC offers distances from Half Marathon to 100 Miler on scenic but rugged singletrack with serious elevation gain. Robust aid stations and great community support make it a class..

Tackle rugged trails and steep climbs at the 0 Degree Winter Trail Festival in Pittsford, NY, a fundraiser supporting local trail projects. Choose 5, 10 or 15 mile routes for a cold season trail challenge with grit and scenic views.