Near Fairfield and Hamilton in Butler County, the Harbin Park has two blazed loops totaling almost six miles of singletrack with 800 feet of total vertical. The trails are smooth, packed dirt. To reach the mountain biking trailhead from Cincinatti, follow US275 to the Mt Healthy Exit. Head north on SR127 for 5 miles and then turn left onto Hunter Road into the park.
Overall, Harbin Park is the 14th most popular mountain bike trail of all 24 mountain biking rides in Ohio.