Official, Part Time

International Motor Sports Association (IMSA): The International Motor Sports Association, LLC (IMSA) was originally founded in 1969 and owns a long and rich history in sports car racing. Today, IMSA is the sanctioning body of the IMSA WeatherTech SportsCar Championship, the premier sports car racing series in North America. IMSA also sanctions the IMSA Michelin Pilot Challenge, IMSA VP Racing SportsCar Challenge and Historic Sportscar Racing, as well as five one-make series: Ferrari Challenge …