2009 24 Hours of Daytona

The 2009 Rolex 24 at Daytona Presented by Crown Royal Cask No. 16 was the first round of the 2009 Rolex Sports Car Series season. It took place at Daytona International Speedway between January 24–25, 2009. David Donohue won the race 40 years after his father won by holding off a furious charge from NASCAR driver Juan Pablo Montoya in the closest finish in race history by 0.167 seconds after overtaking Montoya in the final hour, beating the previous record of 30.879 seconds from 2000. It was Brumos Racing's first Rolex Sports Car Series win since 2003 and prevented Chip Ganassi Racing from securing a fourth successive 24 Hours of Daytona victory.

Race results
Class winners in bold.