The calculated distance (air line) between Préveza and Néa Smýrni is approximately 175 miles respectively 281 kilometers.
By car or train, the actual journey to Néa Smýrni is certainly longer, as only the direct route (as the crow flies) between Préveza and Néa Smýrni has been calculated here.
Air line (approximately)
281 kilometers
152 nautical miles