24 Hours of Daytona
The Rolex 24 At Daytona, is a 24-hour sports car endurance race held annually at Daytona International Speedway in Daytona Beach, Florida. It is run on a 3.56-mile (5.73 km) combined road course, utilizing portions of the NASCAR tri-oval and an infield road course. It is part of Speedweeks, and it is the first major automobile race of the year in the United States.
Porsche has the most overall victories of any manufacturer, scored by various models, including the road based 911, 935 and 996. Porsche also won a record 11 consecutive races from 1977 to 1987 and won 18 out of 23 races from 1968 to 1991.
The Daytona race is conducted entirely over a closed course within the speedway arena without the use of any public streets. Most parts of the steep banking are included, interrupted with a chicane on the back straight and a sweeping, fast infield section which includes two hairpins.