Next in importance to the musical competitions were the chariot and horse races, which rivalled in popularity even those at Olympia. At first they were confined, as at Olympia, to the four-horse chariot and the horse race. The pair-horse chariot-race (συνωρίς) and the chariot-race for colts were introduced at Delphi in 398 B.C. and 378 B.C., only a few years after their introduction at Olympia. The remaining two events, the synoris for colts and the riding race for colts, which were introduced at Delphi in 338 B.C. and 314 B.C., did not figure at Olympia till the next century. The popularity of horse-racing at Delphi was due to the wide-spread influence of the Delphic oracle among the Greek colonies, and particularly to the intimate connexion between Delphi and the great horse-breeding lands of Northern Greece, which belonged to the Thessalian Amphictyony; at a later time also to the influence of Macedon. Delphi was no less accessible than Olympia to the Greeks on either side of the Corinthian Gulf, and to the colonies of the West, and of Africa. The earliest victor in the chariot-race was Cleisthenes of Sicyon, and in the fifth century we find among the victors Megacles, the Alcmaeonid of Athens; Hieron of Syracuse, twice victor in the horse-race, once in the chariot-race; Xenocrates of Agrigentum, for whom Pindar wrote his earliest hymn of victory; and Arcesilas of Cyrene. The “Charioteer” is supposed by some archaeologists to be part of the monument commemorating the victory of Arcesilas.
Still more significant than these names is the number of competitors. Pindar, in his ode on the victory of Arcesilas, states that in this race no less than forty chariots fell. The entries, then, must have been still more numerous. We may doubt whether such a field was possible at Olympia. The princes of the West can have formed but a small portion of the entries; few of them can have cared to undertake the expense and labour necessary to compete so far from home unless they had a good prospect of success. A field of forty implies large entries from the home district, and the home district of Delphi afforded an abundant supply of competitors. Northern Greece was a land of horses, and therefore, as Aristotle remarks, of oligarchies. Thessaly, in particular, was famed for producing the finest horses in Greece, and Thebes was famous for its chariots.[334] In both countries the power was in the hand of the land-owning classes, whose wealth consisted largely in their studs of horses. In Thessaly cavalry were first organized and employed for war. Thebes was credited with the first victory in the chariot-race, Thessaly with the first victory in the horse-race at Olympia. They had celebrated local festivals. Pindar’s second Pythian is in honour of a victory in the chariot-race won by Hieron at some Theban festival, either the Heraclea or the Iolaea, and the thirteenth ode of Bacchylides celebrates the victory of Cleoptolemus of Thessaly in the Thessalian Petraea. Some idea of the proportion of local entries at the Pythia may be formed from the list of competitors given in the description of the chariot-race in the _Electra_ of Sophocles. There are ten competitors. One comes from Sparta, one from Achaea; Orestes himself is proclaimed an Argive, but drives a team of Thessalian horses; two are Libyans from Barca, which reminds us of the victory of Arcesilas; the remaining five are an Athenian, a Boeotian, an Aetolian, a Magnesian, and an Aenianian. The Magnetes and Aenianes were Thessalian tribes belonging to the ancient Amphictyony. Thus five came from Northern Greece, two from the colonies, and three from the Peloponnese, if we suppose the Achaean to belong to the Peloponnesian and not to the Thessalian Achaeans. The few records which we possess of the fourth century and later suggest that the competition was now practically confined to Northern Greece, the only exception being the victory of Ptolemaeus, the son of Lagus, in 314 B.C., and he, though king of Egypt, was a Macedonian. In the second century there seem to have been horse-races in connexion with the official deputations, Pythaids, sent from time to time from Athens to Delphi; but these deputations had no necessary connexion with the Pythian games. In Roman times we find no mention of horse or chariot races at Delphi, and we may therefore assume that, owing to the impoverishment of Greece, these competitions had ceased to exist.