Racetrack
The length of the race track is exactly one mile (1.6 km), and races are run counter-clockwise. A 100-mile AAA championship (Indianapolis-type car) race was held at Del Mar in November 1949, but the death of popular local driver Rex Mays in that event caused "big car" racing to disappear from Southern California circuits for another 18 years. (In addition, the horse racing community was deeply resentful of oil-dripping cars being run on the horse-oriented dirt racing surface.)
There was a temporary auto racing circuit held in its parking lot during the mid-1960s and between 1987 and 1992. The latter hosted an IMSA Camel GT race. Both circuits were 1.6-mile (2.6 km) long with layouts that were different from each other.
Read more about this topic: Del Mar Fairgrounds