Thoroughbred horse racing is a popular sport that involves racing horses of the Thoroughbred breed, known for their speed and agility. Races typically take place on a track, and the horses compete to see who can finish a set distance the fastest. These races can vary in length and are often held at various venues around the world. The sport has a rich history and is associated with events like the Kentucky Derby and the Royal Ascot. Thoroughbred horses are bred specifically for racing, and their lineage is carefully recorded to maintain the breed's quality and performance standards.