The biggest horse racing event in the world is the annual Kentucky Derby, held at Churchill Downs in Louisville, Kentucky. It is the first leg of the prestigious Triple Crown, followed by the Preakness Stakes and the Belmont Stakes. The Kentucky Derby attracts around 150,000 spectators who come to watch the best three-year-old thoroughbreds run a distance of 1 1/4 miles on the dirt track. The race has a rich history and tradition, dating back to 1875, and is known as “The Most Exciting Two Minutes in Sports.”