Secretariat set the Belmont Stakes record by winning the 1973 race by 31 lengths.
His performance completed the American Triple Crown and remains one of the most dominant displays in Thoroughbred racing. Secretariat covered the 1½-mile Belmont distance in 2 minutes 24 seconds, a world record for the distance on dirt at the time.
The margin is often confused with the winning margins of his Kentucky Derby and Preakness Stakes victories. Secretariat won the Derby by 2½ lengths, while the Preakness was officially recorded as a 2½-length victory after a timing and margin review.
The Belmont triumph made Secretariat the first Triple Crown winner since Citation in 1948. His 1973 Belmont time remains the stakes record, making the race a defining benchmark in American racing history.