Texas World Speedway was built in 1969 and is one of only seven superspeedways of two miles (3 km) or greater in the United States used for racing, the others being Indianapolis, Daytona, Pocono, Talladega, Auto Club, and Michigan (there are several tracks of similar size used for vehicle testing). TWS is located on approximately 600 acres (2.4 km²) on State Highway 6 in College Station, Texas. There is a 2-mile (3 km) oval, and several road course configurations. The full oval configuration is closely related to that of Michigan and is often considered the latter's sister track, featuring steeper banking, at 22 degrees in the turns, 12 degrees at the start/finish line, and only 2 degrees along the backstretch, compared to Michigan's respective 18, 12, and 5 degrees.