Types of racing

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, Thoroughbred flat races are run on surfaces of either dirt, synthetic or turf; other tracks offer Quarter Horse racing and Standardbred horse racing, or combinations of these three types of racing surfaces. 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 to 12 furlongs (0.63 to 1.5 mi; 1.0 to 2.4 km); with this in mind, breeders of Thoroughbred race horses attempt to breed horses that excel at a particular distance (see Dosage Index).