The calculated distance (air line) between Anávyssos and Néa Smýrni is approximately 19 miles respectively 31 kilometers.
By car or train, the actual journey to Néa Smýrni is certainly longer, as only the direct route (as the crow flies) between Anávyssos and Néa Smýrni has been calculated here.
Air line (approximately)
31 kilometers
17 nautical miles