Marathons, Trails & ParksGreater Cincinnati has over 20,000 acres of city and county parks, and boasts one of the largest park systems (per capita) in the United States!OhioBicentennial Commons at Sawyer PointCincinnati ParksGreater Cincinnati Trails/Parks/ActivitiesHamilton County Parks and RecreationKrohn ConservatoryParky's FarmOhio Department of Natural Resources/Parks and Recreation Ohio State Trails GuideIndianaIndiana State ParksRipley County ParksDearborn County Parks and Nature CentersKentuckyKentucky State Parks and RecreationRacesGreater Cincinnati Race ScheduleFlying Pig Marathon