Kentucky Derby entrant Mor Spirit, ridden by George Alvarez, gallops at Churchill Downs in Louisville, Ky., Thursday, May 5, 2016. The 142nd Kentucky Derby is Saturday, May 7. (AP Photo/Garry Jones)

5 fun facts about the Kentucky Derby

The 142nd running of the Kentucky Derby will take place Saturday, May 7 in Louisville. Here are five fun facts about the race.