Trail Running calendar near Dayton 2026-2027

Trail running events at A.W. Marion State Park along Hargus Lake shoreline, featuring a half marathon, 10K, 5K, 6 Hours of Power and a 20K relay across 310 acres of woodlands and native landscapes.

A 5K style mud and obstacle course in East Fork State Park featuring more than 15 natural and man made obstacles, from crawls and climbs to cargo nets and a final sandy beach run. The route uses existing trails and is about 3.1 miles.

A trail race at French Shelter Park in Cincinnati offering 5K, 10K and a 13.1 mile half marathon on meadow and woodland trails with notable elevation gain and finisher medals.

A multi-distance Spartan weekend at Perfect North Slopes near Cincinnati with muddy, hilly terrain and multiple obstacle races including Sprint, Super, Beast and Ultra. The festival area and onsite parking are located at the ski resort.

A trail running event near Chillicothe, Ohio offering youth 2 mile, 10k, 24 hour solo and relay, and a new 100 mile solo option with a 32 hour limit; parking shuttle and assigned 10x10 crew spaces.

Experience a trail race along the largest inland beach in Ohio at Alum Creek State Park. Choose from distances ranging from 5K to a half marathon or join a relay team to run through scenic shale cliffs.

An adaptive trail event at Russ Nature Reserve offering 1 mile, 2 mile, and 5K options; rolling starts accommodate walkers, runners, and wheelchair participants, with member fee waivers and on-site registration options.

A spring trail event at Oakes Quarry Park in Fairborn, Ohio on June 6, 2026 offering 5K, 10K, and 15K courses across limestone cliffs and wooded trails; overall winners receive awards and all finishers get a medal.

A summer festival at the Guard Archaeological Preserve combining a 5K run/walk, an untimed Adventure Trek with hands-on archaeology stops, and a community festival with food trucks, live music, and fundraising activities.

Experience a friendly introduction to trail running at the ORRRC Possum Creek 5K Trail Race. Navigate a low elevation course through meadows and woods in Dayton with accessible terrain for all participants.

A night trail event at Caesar Creek State Park offering full marathon, half marathon and 10K on single track loops around the lake. The cupless race has four aid stations, required headlamp gear, glow in the dark medals and equal podium spo..

A 5K trail race on June 14, 2026 at Garbry Big Woods Reserve in Piqua, part of the Miami County Park District Trail Run Challenge. Multiple registration tiers include shirt and no shirt options; basic health checks and age group awards are..

An obstacle course event on June 20, 2026 at the IU East cross country course in Richmond IN with a 3 mile route and more than a dozen challenges, race shirts, medals, snacks, and a fan zone. Proceeds support Reid Health athletic training s..

A summer solstice trail race at John Bryan State Park near Yellow Springs covering about 13 miles with chip timing and generous time limits. ORRRC members run free; non-members pay $10 and animals are not allowed except service dogs.

Experience a 3.6 mile trail run at French Park featuring meadows and multiple creek crossings. This fourth leg of the Dirt Days Trail Series offers age graded awards and random door prizes in a picturesque Cincinnati park.

A two day obstacle course weekend in Bloomfield Township Ohio on June 27-28 2026 featuring a 1.5 mile military style Battle Challenge with a live fire range, multiple race distances, large water slides, camping and the USA OCR national cham..

A 30K trail race at Mount Airy Forest in Cincinnati made of three 10K loops. Finishers receive a t-shirt and medal; the race counts toward the Alpine Trail Race Series and awards series points.

Hourly 4.1667 mile Backyard Ultra loops at Countryside YMCA in Lebanon Ohio on June 27 2026, plus fixed 12 hour and 24 hour backyard options. Field limited to 150 runners and crews are limited to three people per runner.

An orienteering event in Camden, OH on 06/28/2026 offering a 10 km map and compass course with multiple skill levels, chip timing, and loaner compasses. Registration runs from 05/01/2026 to 06/27/2026 with a fee of $8.00.

A Trail Sisters approved summer trail ultra at Caesar Creek State Park offering 50 mile and 50k counterclockwise loops, cupless aid stations with food options, and 14.5 hour cutoffs. Expect single-track rollers and two manned aid stations.