The calculated distance (air line) between Volos and Néa Smýrni is approximately 107 miles respectively 172 kilometers.
By car or train, the actual journey to Néa Smýrni is certainly longer, as only the direct route (as the crow flies) between Volos and Néa Smýrni has been calculated here.
Air line (approximately)
172 kilometers
93 nautical miles