Winning the triple race is not easy. Since the commencement of this competition, only 13 horses have ever won the triple race in history and that is to show you that it is not an easy game. The last won was Justify which won it last two years ago which is 2018.
Other horses that have won that triple race in the past, Sir Barton, in the year 1919. Gallant Fox won the triple race in the race of 1930. Omaha won it five years after in the year 1935, just as War Admiral won it in the year 1937. In the year 1941, the races were won by Whirlaway while Count Fleet won in the year 1943. In the year 1946 Assault won it and Citation won it two years later in 1948. Secretariat won 1973, Seattle Slew in 1977 and affirmed in the year 1978. American Pharaoh won in 2015 while Justify won last in 2018.