The calculated distance (air line) between Áyios Konstandínos and Peristéri is approximately 131 miles respectively 211 kilometers.
By car or train, the actual journey to Peristéri is certainly longer, as only the direct route (as the crow flies) between Áyios Konstandínos and Peristéri has been calculated here.
Air line (approximately)
211 kilometers
114 nautical miles