The calculated distance (air line) between Litóchoro and Néa Smýrni is approximately 163 miles respectively 262 kilometers.
By car or train, the actual journey to Néa Smýrni is certainly longer, as only the direct route (as the crow flies) between Litóchoro and Néa Smýrni has been calculated here.
Air line (approximately)
262 kilometers
141 nautical miles