The following is a list of circuits that have hosted International Motor Sports Association (IMSA) SportsCar Championship races from the inaugural season in 1971 up to and including the 2020 season. The list includes the combined IMSA history of races held as part of the IMSA GT Championship, the Grand-Am Rolex Sports Car Series, the American Le Mans Series and the current WeatherTech SportsCar Championship. Road course Street circuit Combined oval road course