The calculated distance (air line) between Karpenísi and Néa Smýrni is approximately 123 miles respectively 199 kilometers.
By car or train, the actual journey to Néa Smýrni is certainly longer, as only the direct route (as the crow flies) between Karpenísi and Néa Smýrni has been calculated here.
Air line (approximately)
199 kilometers
107 nautical miles