The Thoroughbred is the king of the racetracks where it excels in long-distance races such as the Prix de l'Arc de Triomphe, the Prix de Diane, the Epsom Derby, or the Jockey Club. Its anatomy - characterized by a lean and muscular body with long legs - is ideally suited to these events. The fastest horse in the world according to the Guinness World Records is a two-year-old Thoroughbred, Winning Brew, validated in 2008 at 44.1 mph (71km/h) at the Penn National Race Course. More massive and more powerful, the Quarter Horse holds the short distance speed record over 1,312 ft (400 m) with 53.4 mph (86 km/h). For comparison, the average speed of a galloping horse is 9.3 to 13 mph (15 to 21 km/h), with possible peaks at 37.2 mph (60 km/h) for the fastest.