Yes. The last triple crown winner was Affirmed in 1978, but before that Seattle Slew in 1977. There was another in 2015, American Pharaoh.
Triple crown winners:
Sir Barton (1919)
Gallant Fox (1930)
Omaha (1935)
War Admiral (1937)
Whirlaway (1941)
Count Fleet (1943)
Assault (1946)
Citation (1948)
Secretariat (1973)
Seattle Slew (1977)
Affirmed (1978)
American Pharaoh (2015)
It's a bit of an awkward question, as the Triple Crown is not a single event but, as the name suggests, a series of three races. But no, his combined time in the Kentucky Derby, Preakness Stakes, and Belmont Stakes is far and away the fastest of any Triple Crown winner. Each were--and still are--track records.
Secretariat
The Kentucky Derby is the first leg of the Triple Crown, a horse that wins the Kentucky Derby, The Preakness, and the Belmont Stakes becomes the Triple Crown Winner
Because it is the first race in the Triple Crown and if a horse wins it then there is a possibility for a Triple Crown winner.
Secretariat
Affirmed in 1978.
Seattle Slew.
Seattle Slew
Seattle Slew
Seattle Slew
The horse that won the TC in 1919 was Sir Barton
They are referred to as the Triple Crown. If a horse wins all three races in one year, he is called the Triple Crown winner.
Seattle Slew was a Thoroughbred racehorse who won the Triple Crown in 1977, becoming the tenth horse in history to achieve this feat. He was known for his speed, stamina, and competitive spirit, and went on to have a successful career as a sire.