How long has there been triple crown races?
No context provided
How long has there been Triple Crown Races in the world?
since 1853
No context provided
How long has there been Triple Crown races in America?
since 1875
Triple Crown of Thoroughbred Racing
https://en.wikipedia.org/wiki/Triple%20Crown%20of%20Thoroughbred%20Racing
Triple Crown of Thoroughbred Racing (United States)
https://en.wikipedia.org/wiki/Triple%20Crown%20of%20Thoroughbred%20Racing%20%28United%20States%29
The Triple Crown of Thoroughbred Racing, often shortened to Triple Crown, is a series of horse races for three-year-old Thoroughbreds. Winning all three of these Thoroughbred horse races is considered the greatest accomplishment in Thoroughbred racing.
Triple Crown of Thoroughbred Racing
In Great Britain, where the term Triple Crown originated with West Australian's three wins in 1853, it is made up of:
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Triple Crown of Thoroughbred Racing
In the United States, the Triple Crown of Thoroughbred Racing, commonly known as the Triple Crown, is a series of horse races for three-year-old Thoroughbreds, consisting of the Kentucky Derby, Preakness Stakes, and Belmont Stakes. The three races were inaugurated in different years, the last being the Kentucky Derby in 1875. 
Triple Crown of Thoroughbred Racing (United States)
The Triple Crown of Thoroughbred Racing, often shortened to Triple Crown, is a series of horse races for three-year-old Thoroughbreds. Winning all three of these Thoroughbred horse races is considered the greatest accomplishment in Thoroughbred racing. The term Triple Crown has been used since 1853, when West Australia experienced three wins in Great Britain. There have been Triple Crown races in America since 1875, when the Kentucky Derby was inaugurated.