Trail Running Calendar United States 2025-2026

Lowells Loop is a unique running event held in Pleasant Hill, OR, featuring a "Last Man Standing" format. Participants run a 5-mile loop within a set time of 60 minutes to qualify for subsequent laps, with each lap starting on the hour. The event continues until only one runner remains or all others..

The Thunderbird Warrior Challenge is a trail running event held at Mt. Ashwabay Outdoor Recreation Area in Bayfield, Wisconsin, on June 14, 2025. It features multiple race distances, including a 50K, 25K, 10K, and a 5K fun run with an obstacle course.The course showcases scenic Northwoods trails, te..

The Last Stand Army Backyard Ultra is a challenging endurance race held in Midlothian, Virginia, on Flag Day, June 14, 2025, to honor the 250th Birthday of the U.S. Army. Participants run a 4.167-mile loop every hour on the hour, continuing until only one runner remains to complete a final loop.The..

The Cotter Bridge Ultra, held at Big Springs Park in Cotter, Arkansas, is a unique timed running event featuring 1, 3, 6, and 12-hour race options. Runners complete repeated 4.1667-mile laps, each starting hourly with just under an hour to finish. The course is a scenic, mostly flat 2.08-mile out-an..

The Miami 50/50 is a unique 50-mile urban ultramarathon held in Miami, Florida, featuring a two-person team format where both runners complete the entire distance together. The race course winds through iconic Miami neighborhoods such as Wynwood, Miami Beach, Key Biscayne, Calle Ocho, Coconut Grove,..

The Mid-State Mile is a challenging last-person-standing running event held on private land near Franklin, Tennessee. The course, known as The Murder Mile, is a 1-mile loop featuring 340 feet of elevation gain, including two climbs, runnable sections, and a downhill stretch on a wide double-track ol..

The Schuetzen NEIN! Hour Endurance Run is a challenging trail running event held in Davenport, Iowa, featuring a 0.85-mile loop through scenic and demanding terrain. Participants can run solo or as part of a relay team, aiming to cover as many miles as possible within a nine-hour window. The course..

The Run For the Ages 10K Trail Chase is a scenic trail running event held in Nolde Forest, Cumru Township, near Reading, Pennsylvania. This unique race features an age-graded start, giving runners of all ages and genders a fair chance to compete for the overall title. The course is a well-marked 10K..

The Dirt Days Trail Series - French Park Creek Crossings is a trail running event taking place in Cincinnati, Ohio, on June 15, 2025. This race features a scenic 3.6-mile course that showcases the beauty of French Park, including meadows, tall grass, and multiple creek crossings. Participants can ch..

The Nipmuck South Trail Race is a 15.7-mile out-and-back trail run held at Mansfield Hollow State Park in Mansfield, Connecticut. The scenic course follows the Fenton River and features varied terrain including small bridge crossings, a climb to a 50-foot cliff, fields, and woods. Runners encounter..

Dirt Circus - San Francisco is a free community running event held in San Francisco, California, celebrating local trail running culture. Organized by UltraSignup, this one-day festival features a social group run with options of 3.2 or 4.5 miles, welcoming all paces and encouraging participants to..

The TSR Trail Half Marathon will take place in Adams on Sunday 15 June 2025. You can run between 10 and 21 kilometers.

Smith’s Challenge Trail Run, organized by the Lancaster Road Runners Club, celebrates its 36th anniversary in 2025 as the oldest trail race in Central Pennsylvania. Held in Lancaster County Central Park, the event features 5-mile and 10-mile trail races that traverse challenging courses with trails,..

The Nature Calls Trail Race is a casual, low-cost event held at Lula Lake Land Trust near Chattanooga, TN, featuring both a 5K and 15K trail course. The 5K is designed to be accessible, while the 15K offers more challenging sections, including a rope segment and a trail leading to Lula Falls. Partic..

The Catamount Weekly Trail Running Race will take place in Williston on Tuesday 17 June 2025. You can run between 5 and 5 kilometers.

The Broken Arrow Skyrace is a premier skyrunning event held annually at Palisades Tahoe, Lake Tahoe, California. Scheduled for June 19-22, 2025, it features nine challenging race distances ranging from a kids' race to a grueling 46K ultra. The courses traverse high-alpine terrain mostly above the tr..

The Kodiak Mountain Series is a challenging three-day stage race held in Kodiak, Alaska, from June 19-21, 2025. Participants will race across three different mountain courses, including Heitman Mountain, Sharatin Mountain, and Pyramid Mountain Loop, each offering steep single-track trails, stunning..

The Juneteenth Menare Foundation 12k & 6k is a scenic trail race held at Button Farm in Germantown, Maryland, celebrating Juneteenth. Participants can choose between a challenging 12k or a 6k course through the Schaeffer Farm Trails, with scenic and hilly terrain. The event features chip-timed resul..

The Froggy Mountain 100 is an ultramarathon held in Galax, Virginia, featuring 50- and 100-mile race options on a challenging 1-mile loop course with approximately 500 feet of vertical gain per loop. Known as one of the toughest courses in the country, the event takes place entirely on private prope..

The Longest Day 5K - Gray will take place in Gray on Friday 20 June 2025. You can run between 5 and 5 kilometers.