Trail Running Calendar United States 2025-2026

Fall Backyard Burn Trail Run - Fountainhead is a trail-running event at Fountainhead Regional Park in Fairfax Station, VA. The race offers two distances: a 5-mile loop and a 10.5-mile course, with elevation gains around 450 feet and 1000 feet, respectively. The 5-mile loop is a classic EX2 single lo..

The Tenth Annual Keepin' It Rural 5K/10K Trail Race and Festival takes place at the scenic Elfin Forest Recreational Reserve in north San Diego. This unique event features chip-timed races for both 5K and 10K runners, with a special course for hikers. The race begins and ends at the Olivenhain Dam,..

Topo Trail Marathon Races take place at East Fork State Park in Bethel, Ohio. The event offers three trail distances on a 6.55-mile lap: Quarter (one lap), Half (two laps), and Full Marathon (four laps), all on 100% singletrack mountain-bike trails. The course emphasizes tight, natural singletrack w..

The Loop Race, Philadelphia’s oldest running event, unfolds on an 8.4-mile loop around the Schuylkill River, starting and finishing near Boathouse Row in Philadelphia, PA 19130. Since 1971, it has become a local favorite with a flat course run largely on the sidewalk, free of traffic, passing histor..

PPTC Endurance Fest in Brooklyn’s Prospect Park offers 50-mile and 50-kilometer ultramarathon options on a looped course of 9 or 15 laps of 3.33 miles. The race begins and ends near the Lincoln Road Entrance and honors NYC’s road-ultra heritage, including Knickerbocker 60k and Metropolitan 50 Mile...

Guana 50K and 12K Trail Races are held at the Guana Tolomato Matanzas National Estuarine Research Reserve in Ponte Vedra Beach, Florida. Presented by JTC Running in association with 1st Place Sports, the event offers a 50K individual, a 50K two-person team, and a 12K race. The 50K course is a 7.75-m..

Dirty South Trail Races take place at Mead's Quarry near Ijams Nature Center in Knoxville, Tennessee. The event includes a Half Marathon (13.1 miles), a Trail 10K, and a Kids Trail Mile. The 13.1-mile course winds through Forks of the River Wildlife Area, William Hastie Park, Marie Myers Park, Ross..

Hunter S. Thompson Fear & Loathing in San Francisco is an urban ultramarathon offering 50K or 50 miles. Located in San Francisco, the single-loop course starts and finishes atop Twin Peaks, with the city spread out beneath.The 50K route is about 99% city streets; the 50-mile option includes some tra..

El Paso, Texas hosts the Frontera Land Alliance 20th Anniversary Trail Race, held at the Wakeem/Teschner Nature Preserve in Resler Canyon, a 91-acre protected space owned by Frontera Land Alliance. The event features a 5k Trail Race and a 1 Mile Trail Walk, welcoming runners, walkers, families, and..

The Tidewater Strider Dismal Swamp 50K/Marathon/Half Marathon/50K Relay takes place in Chesapeake, Virginia. The event offers five options: Dismal Swamp 50K, Marathon, Half Marathon, 50K Relay, and a Half Marathon Walkers. The USATF-certified courses are described as fast: the 50K is four loops of a..

Pine Mountain Trail Run (PMTR) is an Old School Ultra held in FDR State Park, Pine Mountain, GA, about an hour from Atlanta. Celebrating 45 years, it offers 19-mile and 40-mile ultras through the Pine Mountain Trail system. The course is rocky single-track with rolling hills, leaf-covered footing, a..

Last One Standing Ultra Marathon is held in Saint George, Utah, on the asphalt Mayor's Loop along the Virgin River, with city and river viewpoints. Adult ultra covers 102 miles by completing 17 loops around a 6-mile course, with the final lap an all-out race to determine winners. A kids division run..

Dizzy Horse Backyard Ultra is a winter ultramarathon in Idaho Falls, Idaho, held at the Bonneville County Exhibition Hall and Sandy Downs Park. The race is a Backyard Ultra: runners complete a 4.167-mile loop every hour on the hour, until only one person remains (the Last Horse Standing). The course..

Bell Ringer Trail Run takes place at Montgomery Bell State Park in Burns, Tennessee, in December. The event offers 50K, 25K, and 15K trail distances, showcasing roughly 30 miles of park trails for the 50K and about 15 miles for the 25K, and 9 miles for the 15K. Runners encounter multiple uphill and..

Deception Pass 50K/25K, organized by Rainshadow Running, takes place in Deception Pass State Park near Oak Harbor, Washington. The course begins at West Point Amphitheater and winds through Cranberry Lake, park roads, and mostly single-track trails that are rocky and rooty, with some steep climbs. T..

The Jingle Trails Challenge presented by Merrell is a festive trail running event held at McAllister Park in San Antonio, Texas. Scheduled for December 13, 2025, it features two race distances: a 10K on the Blue Loop and a 5K primarily on the Red Trail. Participants will navigate technical terrain i..

The Pere Marquette Endurance Trail Run is a challenging 7.8-mile trail race held annually in December at Pere Marquette State Park in Grafton, Illinois. Celebrating its 35th year, the course features hilly terrain and scenic views through the park. Participants enjoy pre-race coffee and packet picku..

Folsom Lake Point to Point Trail Half Marathon is a 13.1-mile trail race held in El Dorado Hills, California, along the south shore of Folsom Lake. The course is predominantly single-track (about 95%) with some dirt-road sections, featuring rolling hills, technical segments, and scenic views of Fols..

MCW The Holmdel Classic is an end-of-year trail challenge held at Holmdel Park in Monmouth County, New Jersey. The course features a 4.65-mile loop (about 50K for 7 laps, halfish for 3 laps), 95% trail and double track, with 584 feet of elevation per lap and Holmdel’s signature “The Bowl.” Runners e..

The Frosty Buck Trail Race takes place in Glenmont, Ohio, and offers 50k and 25k trail distances built on the original BBTBU loop. In this revival, the event returns to a standard format rather than the Backyard Ultra style. The 50k consists of a 2-mile opening segment followed by seven loops of the..