Passage 8.26.4
ἡνίκα δὲ τὸν ἀγῶνα τὸν Ὀλυμπικὸν ἐκλιπόντα ἐπὶ χρόνον πολὺν ἀνενεώσατο Ἴφιτος καὶ αὖθις ἐξ ἀρχῆς Ὀλύμπια ἤγαγον, τότε δρόμου σφίσιν ἆθλα ἐτέθη μόνον καὶ ὁ Κόροιβος ἐνίκησε· καὶ ἔστιν ἐπίγραμμα ἐπὶ τῷ μνήματι ὡς Ὀλυμπίασιν ὁ Κόροιβος ἐνίκησεν καὶ ἀνθρώπων πρῶτος καὶ ὅτι τῆς Ἠλείας ἐπὶ τῷ πέρατι ὁ τάφος αὐτῷ πεποίηται.
When Iphitus renewed the Olympic contests after they had been discontinued for a long period and recommenced holding the Olympic Games from the beginning, at first only prizes for running were offered, and Coroebus was victorious. There is an inscription on his tomb stating that Coroebus was the first of men to win at Olympia, and that his grave is situated at the boundary of Elis.