Kentucky Derby Challenge Stakes Kentucky Derby Challenge Stakes The Kentucky Derby Challenge Stakes was an English Thoroughbred horse race intended to become an annual race, but was run only one time on 18 March 2009 at Kempton Park Racecourse in Sunbury-on-Thames, Surrey. Open to three-year-old European horses, it was raced clockwise at a distance of nine furlongs ( miles, app. 1800 metres) on Polytrack. The winner of the race was guaranteed one of the twenty starting spots in the mile (10 furlongs) 2009 Kentucky Derby held on the first Saturday in May on the dirt track at Churchill Downs in Louisville, Kentucky. The race
American Quarter Horse from 220 to 870 yards. Thus, they have long legs and are leaner than their stock type counterparts, but are still characterized by muscular hindquarters and powerful legs. Quarter Horses race primarily against other Quarter Horses, and their sprinting ability has earned them the nickname, "the world's fastest athlete." The show hunter type is slimmer, even more closely resembling a Thoroughbred, usually reflecting a higher percentage of appendix breeding. They are shown in hunter/jumper classes at both breed shows and in open USEF-rated horse show competition. There are several genetic diseases of concern to Quarter Horse breeders: American Quarter Horse