The Belmont Stakes is an American Grade I stakes race held every June at Belmont Park in Elmont, New York. The race is the third and final leg of the Triple Crown, following five weeks after the Kentucky Derby, and three weeks after the Preakness Stakes. It is a 1.5-mile (2.4 km) thoroughbred horse race for three-year-old colts and geldings carrying a weight of 126 pounds (57 kg) and for fillies with a weight of 121 pounds (55 kg). The attendance at the Belmont Stakes ranks fourth in North America and usually surpasses the attendance of all other stakes races including the the Breeders' Cup. The attendance of the Belmont Stakes typically only trails the Kentucky Derby, the Preakness Stakes and the Kentucky Oaks, for more information see American Thoroughbred Racing top Attended Events.

The Belmont Stakes is called the "Run for the Carnations" because of the blanket of white carnations that is draped over the winner's neck. Through 1996, the post parade song was "Sidewalks of New York." Beginning in 1997, the audience was invited to sing the Theme from New York, New York following the call to the post. This tradition mirrors the singing of two other songs at the post parades of the first two Triple Crown races, My Old Kentucky Home at the Kentucky Derby and Maryland, My Maryland at the Preakness Stakes.

The first Belmont Stakes was held at Jerome Park Racetrack in The Bronx, built in 1866 by stock market speculator Leonard Jerome (1817–1891) and financed by August Belmont, Sr. (1816–1890) for whom the race was named. The race continued to be held at Jerome Park until 1890 when it was moved to the nearby facility, Morris Park Racecourse. The race remained there until the May 1905 opening of the new Belmont Park, 430 acre (1.7 km²) racetrack in Elmont, New York.