The calculated distance (air line) between Néa Michanióna and Agios Dimitrios is approximately 181 miles respectively 291 kilometers.
By car or train, the actual journey to Agios Dimitrios is certainly longer, as only the direct route (as the crow flies) between Néa Michanióna and Agios Dimitrios has been calculated here.
Air line (approximately)
291 kilometers
157 nautical miles