Canadian Classic Races

The Triple Crown of Thoroughbred Racing, often shortened to Triple Crown, comprises three races for three-year-old Thoroughbred horses. Winning all three of these Thoroughbred horse races is considered the greatest accomplishment in Thoroughbred racing. The term originated in mid-19th century England and different nations where thoroughbred racing is popular each have their own Triple Crown series.

In the United States, the three races that make up the Triple Crown are:

There have been several different versions of the Triple Tiara (sometimes known as the Filly Triple Crown) in the United States. One of them was a national version that consisted of undercard events on the same weekends as the associated Triple Crown races:

Only one filly won this version of the Triple Tiara, Davona Dale in 1979. Few have even tried as the short time between the Kentucky Oaks and Black-Eyed Susan is generally considered too short for fillies.

The most commonly accepted version of the Triple Tiara uses three races from New York. From 1957 to 2002, and 2007 to 2009, these three races were the Acorn Stakes, the Mother Goose Stakes, and the Coaching Club American Oaks. Eight fillies won this version of the New York Triple Tiara:

In 2010, the NYRA changed the configuration of the Triple Tiara to include the Alabama Stakes instead of the Mother Goose. Thus far, no filly has won the reconfigured Triple Tiara.

In England, where the term Triple Crown originated with West Australian's three wins in 1853, it is made up of:

Since the 2,000 Guineas was first run in 1809, fifteen horses (including three winners of substitute races at Newmarket during World War I) have won the English Triple Crown. The most recent – and only winner since World War II – was Nijinsky, in 1970. For many years, it was considered unlikely that any horse would ever win the English Triple Crown again. In the winter of 2006/2007, however, trainer Jim Bolger was training his unbeaten colt Teofilo for the Triple Crown and bookmaker William Hill plc was offering odds of only 12/1 against Teofilo winning the 2007 Triple Crown. The horse was withdrawn from the 2000 Guineas two days before the race after suffering a setback and never raced again.

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Wikipedia