Chicagoland Speedway is a 1.520 mi (2.446 km) tri-oval speedway with a curved backstretch in Joliet, Illinois, southwest of Chicago. The speedway opened in 2001 and actively hosted NASCAR racing including the NASCAR Cup Series until 2019. Until 2010, the speedway has also hosted the IndyCar Series, recording numerous close finishes including the closest finish in IndyCar history. The speedway is owned and operated by NASCAR.