Plato, Laws 833c

καὶ τιθέντες τὸν ἀγῶνα μενοῦμεν τούτους, ἕως ἂν ἔλθωσι, καὶ τῷ νικῶντι τὰ νικητήρια δώσομεν ἑκάστων. ὀρθῶς. τριττὰ δὴ ταῦτα ἀθλήματα διανοηθῶμεν, ἓν μὲν παιδικόν, ἓν δὲ ἀγενείων, ἓν δὲ ἀνδρῶν· καὶ τοῖς μὲν τῶν ἀγενείων τὰ δύο τῶν τριῶν τοῦ μήκους τοῦ δρόμου θήσομεν, τοῖς δὲ παισὶ τὰ τούτων ἡμίσεα, τοξόταις τε καὶ ὁπλίταις ἁμιλλωμένοις, γυναιξὶν δέ, κόραις μὲν ἀνήβοις γυμναῖς

we shall await the return of these runners, and to the winner of each race we shall award the prize. Very right. Let us plan these contests in three divisions—one for children, one for youths, and one for men. We shall ordain that the course for the youths’ races shall be two-thirds of the full course, and that for children one-half, when they compete either as archers or as hoplites. In the case of females, we shall ordain races of a furlong, a quarter-mile, a half-mile, and a three-quarters