Thompson Speedway Motorsports Park (TSMP), formerly Thompson International Raceway, is a motorsports park in Thompson, Connecticut, featuring a ⁵⁄₈-mile (1.0 km) paved oval racetrack and a 1.7-mile (2.7 km) road racing course. Once known as the "Indianapolis of the East", it was the first asphalt-paved racing oval track in the United States and is now under the NASCAR Whelen All-American Series banner. Each year Thompson hosts one of the great fall variety events "The World Series of Auto Racing" highlighted by the IMSA Super Modifieds and the NASCAR Whelen Modified Tour.