Mid-Ohio Sports Car Course is a road course auto racing facility located in Troy Township, Morrow County, Ohio. The track opened as a 15-turn, 2.4 mile (3.86 km) road circuit run clockwise. The back portion of the track allows speeds approaching 180 mph (290 km/h). A separate starting line is located on the backstretch to allow for safer rolling starts. The regular start/finish line is located on the pit straight. In 2006, a second major refurbishment saw several improvements. The entire circuit was repaved, and the concrete patches in the turn apexes were removed. A new motorcycle "short course" was created by connecting turn one with the backstretch, and another motorcycle oval was created by connecting the chicane straight with the backstretch.