American Grade I stakes race for three-year-old Thoroughbreds run at Belmont Park in Elmont, New York. Colts and geldings carry a weight of 126 pounds (57 kg); fillies carry 121 pounds (55 kg).

Nicknamed The Test of the Champion and The Run for the Carnations, this race is the traditional third and final leg of the Triple Crown. It is usually held on the first or second Saturday in June, five weeks after the Kentucky Derby and three weeks after the Preakness Stakes.

The 1973 Belmont Stakes and Triple Crown winner Secretariat holds the mile and a half stakes record (which is also a track and world record on dirt) of 2:24.

When run at 1+1⁄2 miles, the Belmont Stakes covers one full lap of Belmont Park, known as "The Championship Track" because nearly every major American champion in racing history has competed on the racetrack. Belmont Park, with its large, wide, sweeping turns and long homestretch, is considered one of the fairest racetracks in America.

Despite the distance, the race tends to favor horses with tactical speed: relatively few winners close from far behind the early leaders.