John Bryan Arboretum Trail Half Marathon & Challenge 2026 — Yellow Springs, OH

John Bryan State Park Arboretum Half Marathon & Loop Challenge Join us at the scenic John Bryan State Park Arboretum in Yellow Springs, Ohio for a unique loop-style running event designed for all fitness levels. The course is a 1.1-mile scenic loop, allowing runners to choose their distance and build their race one loop at a time in a highly supported environment. Distance Options: 1.1 Mile Fun Loop – great for beginners, walkers, and families 3.3 Miles (3 loops) – short distance challenge 6.6 Miles (6 loops) – mid-distance endurance 9.9 Miles (9 loops) – advanced training distance 13.2 Miles (12 loops) – Half Marathon distance Course Features & Support: 🚰 Water & aid station available every 1.1 miles (each loop) 🚻 Park restroom facilities (park potties) available on-site 🎽 Clear, easy-to-follow loop course design 👏 Frequent spectator support and encouraging atmosphere 🧭 Safe, controlled, and consistent race environment This looped format keeps runners engaged and supported with frequent access to hydration and facilities, making it ideal for pacing consistency, beginners building confidence, and experienced runners chasing personal records. Set in the natural beauty of John Bryan State Park, this event blends endurance racing with a welcoming community atmosphere where every loop brings you closer to your goal.