Yes. The Triple Crown races are for three year olds only.
The Triple Crown is a combination of three races The Kentucky Derby, The Preakness Stakes and the Belmont Stakes
The Queen's Plate is the first leg of the race. The Prince of Wales Stakes is the second leg. The Breeders' Stakes is the third and final leg of the annual Canadian Triple Crown Thoroughbred horse race.
The three races that make up the Triple Crown are the Kentucky Derby, the Belmont Stakes and the Preakness. The Derby is the longest race out of the three.
Secretariat
Yes.
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.
Ron Turcotte
The best racer that ever lived, Secretariate.
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.
No horse has ever won the Triple Crown twice because they can only race in the Triple Crown races as three year olds.
Chrysler sponsored the Triple Crown from 1987-1993. They paid a $1 million dollar bonus to the horse with the best overall record in the three races and would have paid $5 million to the winner of the Triple Crown had there been one (there wasn't).