Daytona 500
Origins
Daytona International Speedway is 2.5 miles (4 km) long and a 500-mile race requires 200 laps to complete. However, the race is considered official after two stages (120 laps) have been completed (300 miles). The race has been shortened four times due to rain (in 1965, 1966, 2003, and 2009) and once in response to the energy crisis of 1974. Since the adaptation of the green–white–checker finish rule in 2004, the race has gone past 500 miles on eight occasions (2005, 2006, 2007, 2010, 2011, 2012, 2015, and 2019).
Daytona 500-7