The Queen's Plate (named the King's Plate from 1901 to 1952, when the reigning monarch was male) is Canada's oldest Thoroughbred horse race, having been founded in 1860.
It is also the oldest continuously run race in North America and it is run at a distance of 1 1⁄4 miles for a maximum of 17 three-year-old Thoroughbred horses foaled in Canada.
The race takes place each summer, in June or July, at Woodbine Racetrack, Etobicoke, Ontario, and is the first race in the Canadian Triple Crown.