The Belmont Stakes is an American Grade I stakes Thoroughbred horse race held every June at Belmont Park in Elmont, New York. It is a 1.5-mile (2.4 km) horse race, open to three year old Thoroughbreds. Colts and geldings carry a weight of 126 pounds (57 kg); fillies carry 121 pounds (55 kg). The race is the third and final leg of the US Triple Crown, following exactly five weeks after the Kentucky Derby, and three weeks after the Preakness Stakes. Consequently, it is run on Saturday, but never before June 5, nor after June 11.

The attendance at the Belmont Stakes ranks fourth in North America and usually surpasses the attendance of all other stakes races, including the Breeders' Cup. The attendance at the Belmont Stakes typically trails only the Kentucky Derby, the Preakness Stakes and the Kentucky Oaks. For more information, see American Thoroughbred Racing top Attended Events. The 2004 Belmont Stakes drew a massive television audience of 21.9 million viewers and had the highest household viewing rate since 1977 when Seattle Slew won the Triple Crown.