![](http://upload.wikimedia.org/wikipedia/commons/thumb/d/d2/Tambo_valley_races_2006_edit.jpg/275px-Tambo_valley_races_2006_edit.jpg)
A Thoroughbred race in Tambo Valley in Australia. Horse racing is an equestrian sport that has been practiced over the centuries; the chariot races of Roman times are an early example. The common sobriquet for Thoroughbred horse racing is "The Sport of Kings".