Pous in the context of "Coroebus of Elis"

The stadion (plural stadia, Ancient Greek: στάδιον; latinized as stadium; also anglicized as stade), was an ancient Greek unit of length, consisting of 600 Ancient Greek feet (podes). There are a range of varieties or understandings of what a stadion was and is; these have been calculated by various historians (of various qualities), and those calculations have varied dramatically (as did perhaps the use and meaning of the term stadion over time in Ancient Greece). Thus, the exact length of one stadion is not known or universally agreed today: historians estimate it at between 150 m and 210 m, with perhaps something of a convergence around the 185 metre length of an Attic stade.

Plethron (Ancient Greek: πλέθρον, plural plethra) is an ancient Greek unit of measurement equal to 97 to 100 Greek feet (ποῦς, pous; c. 30 centimeters), although the measures for plethra may have varied from polis to polis. This was roughly the width of a typical ancient Greek athletic running-track.

A plethron could also be used as a unit of measured area, and reference to the unit in defining the size of a wrestling area is made by Libanius. A square plethron of c. 30 by 30 meters was used as the standard dimensions of a Greek wrestling square, since such competitions were held within the racing track in ancient Greece. In other connotations, it functioned as the Greek acre, and varied in size to accommodate the amount of land a team of oxen could plow in a day.

The stadion (plural stadia, Ancient Greek: στάδιον; latinized as stadium; also anglicized as stade), was an ancient Greek unit of length, consisting of 600 Ancient Greek feet (podes). There are a range of varieties or understandings of what a stadion was and is; these have been calculated by various historians (of various qualities), and those calculations have varied dramatically (as did perhaps the use and meaning of the term stadion over time in Ancient Greece). Thus, the exact length of one stadion is not known or universally agreed today: historians estimate it at between 150 and 210 m (490 and 690 ft), with perhaps something of a convergence around the 185 metres (607 ft) length of an Attic stade.