The calculated distance (air line) between Néa Moudhaniá and Keratsíni is approximately 159 miles respectively 255 kilometers.
By car or train, the actual journey to Keratsíni is certainly longer, as only the direct route (as the crow flies) between Néa Moudhaniá and Keratsíni has been calculated here.
Air line (approximately)
255 kilometers
138 nautical miles