The foot-races could no longer take place near the altar, and a new permanent “dromos,” or race-course, was provided to the east of the colonnade. This may have been partly a concession to the growing demands of professional athletes, but the new race-course was still of the simplest. The ground was approximately levelled, the course was measured and perhaps marked by a permanent line of stone slabs at either end, and water-channels were provided to carry the water from the west of the Altis to the race-course, for the convenience of spectators and athletes alike. Perhaps permanent seats were provided for the Hellanodicae, and for the priestess of Demeter Chamyne, who had a place of honour opposite them. The rest of the spectators had no seats, but reclined or stood on the slopes of the hill of Cronus, or else on the flat plain that stretched between the stadium and the Alpheus.
Whether all the athletic events or only the races were transferred to the new course is uncertain. The only evidence on the point is contained in a passage of Xenophon, describing the battle which took place at Olympia in 364 B.C. In this year the wrestling of the pentathlon undoubtedly took place near the altar as it had done in Pindar’s time; but it is not quite clear whether this was the usual thing or exceptional. In the dearth of evidence it is a matter for individual judgment, and my own opinion is that only the foot-races and throwing the diskos and javelin were transferred to the new dromos, and that boxing, wrestling, and the pankration continued to take place in the triangular space commanded by the treasury terrace and the colonnade. The treasury terrace and colonnade formed the theatre of which Xenophon speaks, and certainly offered far better accommodation for spectators of such events than was possible in the stadium proper, at least until it was improved and banked up after the battle of Chaeronea.[140]
About the same time improvements were made in the hippodrome. Hitherto the arrangements for the equestrian events must have been as simple as for the athletics. But now a permanent hippodrome was provided south of the stadium, and an elaborate starting-gate for the chariots was constructed by the artist Cleoetas.[141] The chariots were arranged in pairs opposite each other along the sides of a triangle, the apex of which pointed down the course. In the centre of this triangle was an altar of Poseidon, on which stood a bronze eagle. At the apex was a brazen dolphin. At the moment of starting this dolphin fell to the ground and the eagle rose, thus announcing the start to the spectators. At the same time the ropes in front of the pair of chariots nearest to the base were withdrawn. As they drew level with the next pair, the next ropes were withdrawn, and so on till the whole field were fairly started.