In the ancient Olympic Games, as well as the other Panhellenic Games, there were both four-horse ("tethrippon", Greek: τέθριππον) and two-horse ("synoris", Greek: συνωρὶς) chariot races, which were essentially the same aside from the number of horses. The chariot racing event was first added to the Olympics in 680 BC with the games expanding from a one-day to a two-day event to accommodate the new event (but was not, in reality, the founding event). The chariot race was not so prestigious as the foot race of 195 meters ("stadion", Greek: στάδιον), but it was more important than other equestrian events such as racing on horseback, which were dropped from the Olympic Games very early on.