Olympia lies in the wide valley of the rather small Alfeiós River (also Romanized as Alpheus, Alpheios) in the western part of the Peloponnese, today around 18 kilometers away from the Ionian Sea, but in antiquity perhaps half that distance.
Olympia atópase no amplo val do Alfeo (tamén romanizado como Alpheus, Alpheios) na parte occidental do Peloponeso, hoxe a uns 18 quilómetros do Mar Xónico, pero na antigüidade quizais a metade desa distancia.