Includes links to sites related to auto racing organizers, drivers and teams, and races involved in 4, 6, 12 or even 24 hours of racing. Examples include:

• Le Man Series racing (including the 24 Hours of Le Mans (auto racing), truck racing. Please forward endurance motorcycle racing to Sports: Motorsports: Motorcycle Racing.
• Sportscar racing is about cars which can travel faster than F1 cars and run for 4, 6, 12 or even 24 hours
• FIA Grand Touring (FIA GT) racing and championships
• IMSA Racing - International Motor Sports Association (IMSA) - sanctioning body for the American Le Mans Series, Star Mazda Series, Trans-Am Series, and Panoz Racing Series.