In the early decades of the 3rd century B.C. and at the N.E. of the sanctuary the stadium was build. The area wasformed with large embankments and a strong retaining wall, which was built on the east.
In the surrounding area all the sports facilities are concentrated, the Palestra, the Gymnasium and the Hippodrome. Nearby are also, in a short distance between them, possibly Stasea's Palestra (arena), a highly successful privateschool for the sons of wealthy families, and the Granite Palestra.

Source: 'DELOS' P.I.HATZIDAKIS