It is when a race horse wins all three big races of the year. The Kentucky Derby, Preakness Stakes, and Belmont Stakes. It is all within 5 weeks and must be won back to back. These 3 races are the biggest stakes in the world. It is for 3 year old race horses.
There is no harness horse triple crown
Affirmed in 1978.
Kentucky...Plain and simple!
The baseball batting triple crown and horse racing triple crown were both won in 1937. Joe Medwick of the St. Louis Cardinals won in baseball and War Admiral won in horse racing. The baseball pitching triple crown and horse racing triple crown were both won in 1930 and 1937. In 1930, Lefty Grove of the Philadelphia Athletics won in baseball and Gallant Fox won in horse racing and, in 1937, Lefty Gomez of the New York Yankees won in baseball and War Admiral won in horse racing.
The "Triple Crown" is usually referring to the "Triple Crown of Thoroughbred Racing". There are three races: The Kentucky Derby, the Preakness Stakes and the Belmont Stakes.