Passage 6.20.9
ἐπὶ τούτου καθεζομένη τοῦ βωμοῦ θεᾶται γυνὴ τὰ Ὀλύμπια, ἱέρεια Δήμητρος Χαμύνης, τιμὴν ταύτη ν ἄλλοτε ἄλλη ν λαμβάνουσα παρὰ Ἠλείων. παρθένους δὲ οὐκ εἴργουσι θεᾶσθαι. πρὸς δὲ τοῦ σταδίου τῷ πέρατι, ᾗ τοῖς σταδιαδρόμοις ἄφεσις πεποίηται, Ἐνδυμίωνος μνῆμα ἐνταῦθα λόγῳ Ἠλείων ἐστίν.
Upon this altar sits a woman who watches the Olympic games, the priestess of Demeter Chamyne, who receives this privilege from the Eleans, now one woman, now another. Maidens, however, are not forbidden to watch. At the far end of the stadium, where the runners have their starting point, stands the tomb of Endymion, according to the Eleans' account.