Unit of length
(Doric σπάδιον/spádion). Greek unit of length equal to 6 pléthra ( pléthron ; cf. Hdt. 2,149,3) or 600 pous (foot). Depending on the underlying standard of the foot (pous), this corresponds to a length of c. 162-210 m; the Attic stadion is equal to 186 m. The stadion for the race at Olympia had a length of 192.3 m, at Delphi 177.3 m, at Epidaurus 181.3 m, and at Athens 184.3 m. 8 stadia correspond approximately to 1 Roman mile (mille passus) of 1500 m.