Passage 8.26.2
ὄργια ἄγουσιν. ἔστι καὶ ναὸς ἐν τῇ Ἡραίᾳ Πανὸς ἅτε τοῖς Ἀρκάσιν ἐπιχωρίου, τῆς δὲ Ἥρας τοῦ ναοῦ καὶ ἄλλα ἐρείπια καὶ οἱ κίονες ἔτι ἐλείποντο· ἀθλητὰς δὲ ὁπόσοι γεγόνασιν Ἀρκάσιν ὑπερῆρκε τῇ δόξῃ Δαμάρετος Ἡραιεύς, ὃς τὸν ὁπλίτην δρόμον ἐνίκησεν ἐν Ὀλυμπίᾳ πρῶτος.
They conduct mysteries here. Within Heraea there is also a temple dedicated to Pan, as he is native to the Arcadians; of the temple of Hera, other ruins together with its columns still remain. Among all those athletes who have arisen among the Arcadians, Damaretus of Heraea surpassed the rest in fame, as he was the first to win the hoplite race at Olympia.