International Speedway Corporation (ISC) was a corporation whose primary business was the ownership and management of motorsports race tracks. ISC was founded by NASCAR founder Bill France Sr. in 1953 for the construction of Daytona International Speedway and in 1999 it merged with Penske Motorsports to become one of the largest motorsports companies in North America. The company played an important, though controversial, role in the modernization of the sport. It worked with NASCAR to create new tracks and update older ones in an effort to improve the racing and the experience for spectators and has constructed popular new tracks in regions previously thought uninterested in NASCAR. Because both companies have several members of the France family in top positions, ISC's competitors have filed multiple lawsuits on antitrust grounds

Daytona International Speedway is a race track in Daytona Beach, Florida, United States, about 50 mi (80 km) north of Orlando. Since opening in 1959, it has been the home of the Daytona 500, the most prestigious race in NASCAR as well as its season opening event. The venue also hosts the 24 Hours of Daytona, the most prestigious IMSA race and one of the three events that make up the Triple Crown of endurance racing. In addition to NASCAR and IMSA, the track also hosts races of ARCA, AMA Superbike, SCCA, and AMA Supercross. The track features multiple layouts including the primary 2.500 mi (4.023 km) high-speed tri-oval, a 3.560 mi (5.729 km) sports car course, a 2.950 mi (4.748 km) motorcycle course, and a 1,320 ft (400 m) karting and motorcycle flat-track. The track's 180-acre (73 ha) infield includes the 29-acre (12 ha) Lake Lloyd, which has hosted powerboat racing.