Race runners are animals that are trained to run in races, usually for sport or entertainment. Horses are the most common type of race runner, and they have been used for racing since ancient times. Horse racing is a popular spectator sport, and it is also a major industry in many countries. Horses are bred specifically for racing, and they are trained to run at top speeds. Race runners must be in peak physical condition in order to compete, and they are often cared for by professional trainers and jockeys.