IMSA, the International Motor Sports Association, has a long history as the premier sanctioning body for sports car competition in North America.

WeatherTech Raceway Laguna Seca (previously known as Mazda Raceway Laguna Seca and Laguna Seca Raceway) is a paved road racing track in central California used for both auto racing and motorcycle racing, built in 1957 near both Salinas and Monterey, California, United States.