The calculated distance (air line) between Orchomenós and Néa Smýrni is approximately 55 miles respectively 88 kilometers.
By car or train, the actual journey to Néa Smýrni is certainly longer, as only the direct route (as the crow flies) between Orchomenós and Néa Smýrni has been calculated here.
Air line (approximately)
88 kilometers
48 nautical miles