Trail Running Calendar United States 2026-2027

Trail races at Kelly's Run Nature Preserve in Holtwood, PA on May 16, 2026 featuring 10K and 5K courses plus a free kids race. Events are chip timed, include aid stations, marked courses, and support the Lancaster Conservancy.

Join this energetic spring race at Oyster Creek Park featuring 5K and 10K distances alongside a BBQ celebration and dog rescue fundraiser. Enjoy post race hot dogs and a festive atmosphere in a beautiful park setting.

This unique 50K ultramarathon at Hueston Woods State Park challenges runners to complete ten 5K loops, each within a strict 50-minute window. The weekend also features half marathon, 10K, 5K, and 6-hour race options for all participants.

An annual endurance rucking event in Cicero, Indiana, featuring a timed 4-hour ruck and a separate 5k trail option. Participants carry weighted packs on a repeating 1-mile, unpaved loop designed for all ages and fitness levels.

Hit the trails in Casper on May 16 for Trail Mix Run Wyoming at Mike Sedar Park, with creeks, hills and muddy singletrack. Pick a 3 mile accessible route, a tougher 10 mile course, or run virtually from anywhere.

Weekend trail races at Hueston Woods State Park on May 16 and 17, 2026, featuring half marathon, 10K, 5K, a six hour timed event, a 20K relay, and a Pack Pass good for all 2026 events.

Run along the iconic LA River Path in Canoga Park with a fun, 80s martial arts theme. Choose from a 5K, 10K, or half marathon, or join virtually. Expect themed music, costumes, and a finisher's medal.

Trail running event at Lions Wilderness Park in Farmington on May 16, 2026, offering 5 mile, 9 mile and 15 mile course options, pre race packet pickup and a race shirt for early registrants.

Explore the new trails of Marshall Mountain in Missoula with this spring trail running event. Choose from a challenging solo 25K, a fun team relay, or a shorter 5-mile race. The day features a community atmosphere with a post-race brunch an..

Run the beautiful single-track trails at Sunderbruch Park in Davenport. Choose from a ~5k or a ~10k course, followed by a community potluck. This cup-free event supports the local trail builders.

Experience the Southern Rockies at Vermejo Park Ranch with gravel cycling distances up to 99 miles and a scenic half marathon on private ranch roads.

Take on the Susquehannock Trail Ultra in Coudersport PA on May 16, 2026, an 83 mile single track challenge with over 14,000 ft of climbing. Rugged navigation and remote aid stations make this a true endurance test with a 36 hour cutoff.

A 5k at Hangar 3 in the Hatbox Sports Complex, with a start and finish through the hangar doors, wooden finisher medals for all runners, cedar awards for top finishers, and guaranteed shirts for registrations by May 1st.

Find your inner zen on the scenic trails of Briar Chapel. Choose from a 2, 5, or 10 mile course through this green community near Chapel Hill. Enjoy post race food, a free kids race, and an awards ceremony with fun contests.

A roughly 14 mile loop around Vallecito Reservoir in Bayfield, Colorado, combining paved road, dirt road and singletrack with about 1,000 ft of climbing. The event features four aid stations, a cupless policy and a post-race meal with live..

Event Overview The Timp Trail Marathon and Half is the 15th running of this event. It takes place on Saturday, May 16, 2026. The start and finish location is Timpanogos Park in Orem, Utah. Distances Marathon Half Marathon Course Details T..

Pound The Mound is a trail running event in Minnesota's Blue Mounds State Park on May 16, 2026. Runners can choose from 30, 20, or 10 mile distances on the park's trails. Early registrants receive a t-shirt, and multi-year participants can..

Hit the trails in Petoskey with the Dandelion Dash, offering a 5K, a 1-mile run, and a short family fun run. The event supports a local preschool and features custom medals for top finishers. A virtual 5K option is also available.

Join the Bursting Bubble 5K Walk & Run in Gilbert, Arizona. This event supports families affected by pregnancy and infant loss through Chasing the Rainbows. Enjoy a community day with entertainment, food trucks, and a meaningful tribute wal..

The Conservation Chase is a trail running event at Lapham Peak State Park supporting local conservation. Choose from distances including a half marathon, 10K, 5K, and ruck or walk options. It's a cupless race with proceeds benefiting the Ta..