Belmont Park is a thoroughbred horse racetrack in Elmont, New York, just east of New York City limits best known for hosting the Belmont Stakes, the final leg of the American Triple Crown. It was opened on May 4, 1905, and is one of the best well known racetracks in the United States. The original structure was demolished in 1963, and a second facility open…Belmont Park is a thoroughbred horse racetrack in Elmont, New York, just east of New York City limits best known for hosting the Belmont Stakes, the final leg of the American Triple Crown. It was opened on May 4, 1905, and is one of the best well known racetracks in the United States. The original structure was demolished in 1963, and a second facility opened in 1968. The second structure was demolished in 2023, and a third version of Belmont Park is expected to open in 2026.