Trail Running Calendar United States 2025-2026

The Euchre Bar Massacre is a challenging fatass-style trail run held near Foresthill, California, starting and finishing at Shirttail Creek Campground. It offers two distances: a 25-mile course with approximately 10,000 feet of climbing and a 50-mile course with about 20,000 feet of elevation gain...

The Wolverine State 100 is an ultra-distance running event held in Michigan’s Lower Peninsula, showcasing the region’s rugged beauty. The race features multiple distances: a 100-mile ultra from Petoskey to Alpena, a 100K ultra finishing in Alpena, a 50K out-and-back course based in Alpena, and a 100..

The Carmel Valley Trail Race, held annually at Gonzales Canyon Open Space in San Diego, offers a scenic and challenging trail running experience. Starting and finishing at Solana Ranch Park, the race features flat sections at the beginning and end, with elevation gains concentrated in the middle, in..

The Arrowhead Endurance Run, held at Arrowhead Lake Campground in Johnston City, Illinois, features a certified 2.07-mile loop trail around the lake, mostly gravel with minimal elevation change, ideal for fast times and high mileage. The event offers multiple race options including 24-hour, 24-hour..

Devil's Den Ultra is a challenging trail running event held in Bradford, Vermont, featuring a rugged 10K loop on Wright's Mountain. The course offers a mix of terrain, including steep climbs, rocky and rooty sections, and a scenic downhill through the woods. Runners can choose from three race option..

The Duff Dog Backyard Ultra is an endurance running event held at Blue Mounds State Park near Luverne, Minnesota. The race features a runner-friendly loop course primarily on grass trails, with some gravel and a short paved section, measuring approximately 4 miles 880 feet (6.7 km). The event follow..

The Bizz Johnson is a scenic trail running event held in Susanville, California, featuring distances of 50K, marathon, half marathon, 10K, and an Express Half Marathon with a relay option. The USATF-certified marathon course is a fast, mostly downhill route along the historic Bizz Johnson Trail thro..

The Trout Brook is a challenging 10-mile trail race held at Willow River State Park in Hudson, Wisconsin. The course features a mix of single-track trails, hills, and a stair climb, offering a demanding terrain for experienced trail runners. Participants will enjoy scenic views, including a majestic..

The Cave Creek Thriller is a celebrated trail running event held in Cave Creek, Arizona, marking its 16th year as part of the Fall Desert Runner Trail Series. It offers four race distances: 50K, 24K, 11K, and 5K. The 50K and 24K races feature point-to-point courses along the scenic Maricopa Trail, c..

Flatrock is a trail running event held in Dacula, Georgia, featuring a 50K, half marathon, and a unique 50/50 Challenge. The race offers a grassroots, no-frills atmosphere with Southern hospitality and scenic Southeastern single-track trails. The course consists of flowing, non-technical trails with..

The Des Plaines River Trail Races, held in Lake County, Illinois, offer a scenic and fast trail running experience with distances including a Half Marathon, Marathon (Boston Qualifier), 50K, and 50 Mile ultra. Starting and finishing at Half Day Forest Preserve, the course features a flat, wide, crus..

The Great Springs Trail Race in San Marcos, Texas, is a vibrant trail running event held at the Purgatory Creek Natural Area. Offering distances of 10K, 13.1 miles (half marathon), 26.2 miles (marathon), and a youth 1-mile race, it features a scenic course with single-track trails, rolling hills, ro..

The DeClue Loops Trail Race is a premier trail running event held in Greensfelder Park, Wildwood, Missouri. The race features a scenic 8.2-mile loop starting and ending near the park's Visitor Center, with runners moving counter-clockwise. Participants can choose from multiple distances: 8 miles (1..

The Backbone Trail Run takes place in Dundee, Iowa, within the scenic Backbone State Park. This event offers two race distances: a moderate 4.3-mile course and a more challenging 10K Lake Loop. Participants enjoy a well-organized trail run featuring a mix of pavement and natural trails, providing be..

The Suffer Better Fall Trail Run is an annual mountain endurance event held at Staunton State Park, Colorado. The 9th edition, scheduled for October 11, 2025, features multiple race distances including a challenging 50K, a 25K with a unique Fishslappers division involving fish catching, and a new 5K..

The Flagstaff Loop Trail 45 Miler is an unofficial "fatass" style ultramarathon held in Flagstaff, Arizona, starting at the Schultz Creek Trailhead. This unique event features a 45-mile course through scenic trails around Flagstaff. There is no entry fee, but participants must contribute items like..

The Cape Fear 24 Hour is an endurance running event held in Lillington, North Carolina, featuring a USATF certified 0.59-mile asphalt loop around local Parks and Recreation baseball fields. The mostly flat course includes one small incline and is well-lit at night by park lights, eliminating the nee..

The Mad Meadows 50 is a challenging trail running event held near Leavenworth, Washington, featuring two distances: a 50-kilometer and a 50-mile race. Set in the scenic Eastern Cascades during October, the course offers a mix of smooth single track, steep climbs, and technical sections framed by gol..

Angel's Rest is a trail running event held in the Columbia River Gorge near Cascade Locks, Oregon, featuring distances of 50K, 20 miles, and 10K. The courses showcase iconic landmarks such as Multnomah and Wahkeena Falls, with scenic views of Angel's Rest, Devil's Rest, and the Columbia River. The 5..

The Virginia Trail Running Festival, held in Max Meadows, Virginia, is an exciting trail running event featuring 100-mile, 100-mile relay, and 50-mile race options. Scheduled for October 11-12, 2025, the festival offers challenging courses with moderate elevation gains—1,500 feet for the 100-mile an..