The calculated distance (air line) between Áyios Konstandínos and Ilioúpoli is approximately 137 miles respectively 221 kilometers.
By car or train, the actual journey to Ilioúpoli is certainly longer, as only the direct route (as the crow flies) between Áyios Konstandínos and Ilioúpoli has been calculated here.
Air line (approximately)
221 kilometers
119 nautical miles