The calculated distance (air line) between Ampelóna and Néa Smýrni is approximately 144 miles respectively 232 kilometers.
By car or train, the actual journey to Néa Smýrni is certainly longer, as only the direct route (as the crow flies) between Ampelóna and Néa Smýrni has been calculated here.
Air line (approximately)
232 kilometers
125 nautical miles