Trail Running calendar near Casstown 2026-2027

Run the Deer Trail Run Half-Marathon through the scenic trails of Cincinnati's Mt. Airy Forest. This themed trail event awards series points and finisher medals. Costumes are encouraged for a chance to win an award.

Trail ultraruns around William H. Harsha Lake in East Fork State Park offering 100 mi, 100K, 50K and 15 mi courses with loop formats, multiple aid stations, a cupless policy, and enforced time cutoffs.

Experience the fourth annual aMAZing 5k trail run at the Garber Nature Center. This event supports the Preble County Park District and offers awards for top finishers across multiple age categories.

Participate in a meaningful run through Marysville to support trauma survivors. Choose between mile, 5k, or 10k distances to help fund safe transitional housing and restoration programs for those affected by human trafficking.

Experience an ultra trail race through the scenic forests and prairies of Germantown MetroPark. Runners can tackle the full 50k distance individually or join a two person relay team to navigate the hilly four loop course.

Support service members and their families at Reynoldsburg Civic Park. Choose between a 5k obstacle course with mud and walls or a stroller friendly paved 5k run through the park grounds.

Celebrate the 30th anniversary of the Air Force Marathon at Wright Patterson Air Force Base in Dayton, Ohio, a Boston qualifying course that finishes at the National Museum of the United States Air Force. Choose from marathon, half, 10K, 5K..

This 7-mile trail run at Stillwater Prairie Reserve features a two-loop course with river crossings. Organized by the volunteer-run ORRRC, it's free for members and offers a finisher's award for all. A low-cost, community-focused event.

Hit the trails at the Yeti Trail Run in Mount Airy Forest Cincinnati with 5K, 10K, half marathon and 30K options through meadows, woods and along a fossil creek. Finishers get medals, costumes are encouraged and walkers are welcome.

A last-person-standing challenge on a flat, simple 4.3-mile loop at Findlay Reservoir. Run a loop every hour until you're the last one moving. The self-supported event features professional timing, a livestream, and supports Habitat for Hum..

Join the Run with Heart in Urbana for a 5K or 1 mile fun run along the Simon Kenton Bike Path starting at the Depot Coffeehouse.

This Halloween-themed run at Highland Banks Metro Park offers a spooky good time for all ages. Choose from a 1 Mile fun run, a 5K, 10K, or Half Marathon, all with custom shirts and medals. Enjoy chip timing, an after-party with a costume co..

Take on the ORRRC Cross Country Trail 5k on the trails of Grant Park. This affordable event is free for ORRRC members and features chip timing, refreshments, and age group awards.

Rule the Roost in Chillicothe, Ohio is the third annual finale of the RunFluent Ohio Trail Series, featuring a 100 percent trail course. Options include 7K, youth 7K, 12 hour solo and 12 hour two person relay, with full aid each loop.

Experience the season finale of the Dirt Days Trail Series at Shawnee Lookout Park. This 5.54 km trail run features two scenic loops with spectacular views of the Ohio and Great Miami River valleys.

This 5.7-mile trail run in Xenia is a community-focused event organized by the Ohio River Road Runners Club. Entry is free for members and youth, with a low fee for others. It features chip timing and awards across multiple age categories.

Experience Cincinnati's longest running ultra marathon through the scenic single track trails of Mt. Airy Forest. Choose between a 50K or 27K loop course featuring technical terrain and significant elevation changes.

Experience a themed trail run through Cincinnati's French Shelter Park with options for a 5k or 10k distance. Participants enjoy costume contests and holiday activities while earning points toward a global series award.

Experience the Rocks and Roots Trail at Alum Creek State Park with a multi loop race through the woods. Choose between 10K, 20K, and 50K distances this autumn in Lewis Center.

Run scenic Ouabache State Park trails with distances from 5 to 15 miles and a 15 mile 3 person relay, all on rooty, bridge strewn paths perfect for autumn. All finishers get a medal, long sleeve shirt and a hot post race meal.