The race was on average on the most competitive in NASCAR history. It unwent 40 official leader changes in 1971, 1973, 1975-1978, 1983-1984, 1989-2000, and each year in the period covering races from 2003-2012. In 13 cases, the race exceeded 60 changes of leader, that of 2010 holds the record of leader changes for this circuit, one less than the NASCAR record created in a race in April.