The Triple Crown of Thoroughbred Racing (Triple Crown) consists of three races for three-year-old thoroughbred horses. Winning all three of these thoroughbred horse races is considered the greatest accomplishment of a thoroughbred racehorse.
In the United States, the Triple Crown consists of the:
Kentucky Derby - run over 1.25 miles at Churchill Downs in Louisville, Kentucky
Preakness Stakes - run over 1.1875 miles at Pimlico Race Course in Baltimore, Maryland
Belmont Stakes - run over 1.50 miles at Belmont Park in Elmont, New York
The Triple Crown starts with The Kentucky Derby on the first Saturday of May. The Preakness follows two weeks later. The Belmont Stakes is three weeks after The Preakness in early June. In the U.S., the term "Triple Crown" is the usual reference for these three horse races unless another sport is specified.