History
Horse racing is an equestrian sport which has been practiced over the centuries; the chariot races of Roman times are an early example, as is the contest of the steeds of the god Odin and the giant Hrungnir in Norse mythology. It is often inextricably associated with gambling. The common nickname for horse racing is The Sport of Kings.
Race Types
The style of racing, the distances and the type of events varies very much by the country in which the race is occurring, and many countries offer different types of horse races.
In the United States, races can occur on flat surfaces of either dirt, polytrack, or grass, generally Thoroughbred racing; other tracks offer Quarter Horse racing and harness racing, or combinations of these three types of racing. Racing with other breeds, such as Arabian horse racing, is found on a limited basis. American Thoroughbred races are run at a wide variety of distances, most commonly from 5 furlongs to 1½ miles (2414 m); with this in mind, breeders of Thoroughbred race horses are able to breed horses that excel at a particular distance (see Dosage Index).
The high point of US horse racing has traditionally been the Kentucky Derby which, together with the Preakness Stakes and the Belmont Stakes, form the Triple Crown of Thoroughbred Racing for three-year-olds. However, in recent years the Breeders' Cup races, held at the end of the year, have been challenging the Triple Crown events, held early in the year, as determiners of the three-year-old Champion. The Breeders' Cup is held at a different track every year; the most recent edition (2006) was held at Churchill Downs. It also has an important effect on the selection of other annual Champions. The corresponding Standardbred event is the Breeders' Crown. There are also a Triple Crown of Harness Racing for Pacers and a Triple Crown of Harness Racing for Trotters.
Quarter Horse racing is popular throughout the entire United States. Quarter Horses are faster than Thoroughbreds, but run shorter distances. While the average Thoroughbred race is roughly a mile, the average Quarter Horse race is about a quarter of a mile (hence the name of the breed). The classic distance of a Quarter Horse race is 440 yards, but races are run from anywhere between 100 and 870 yards.
American Quarter Horses are shorter and more muscular than their Thoroughbred cousins, and so are more suited to shorter, more explosive races. With the exception of the longer, 870-yard distance contests, Quarter Horse races are run flat out, with the horses running at top speed for the duration. There is less jockeying for position, as turns are rare, and many races end with several contestants grouped together at the wire.
Betting
The three most common ways to bet money are: bet to win, bet to place, and bet to show. Bet to win means that you stake money on the horse, and if it comes in first place, the bet is a winner. In bet to place, you are betting on your horse to finish either first or second and 'show' is first, second or third. Since it is much easier to select a horse to finish first, second or third than it is to select a horse just for first, the 'show' payoffs will be much lower on average than win payoffs. Betting 'show' is really playing it safe while win betting is a bit more risky, yet the rewards are better.



