The calculated distance (air line) between Týrnavos and Néa Smýrni is approximately 146 miles respectively 234 kilometers.
By car or train, the actual journey to Néa Smýrni is certainly longer, as only the direct route (as the crow flies) between Týrnavos and Néa Smýrni has been calculated here.
Air line (approximately)
234 kilometers
127 nautical miles