The calculated distance (air line) between Néa Filadélfeia and Sykiés is approximately 185 miles respectively 299 kilometers.
By car or train, the actual journey to Sykiés is certainly longer, as only the direct route (as the crow flies) between Néa Filadélfeia and Sykiés has been calculated here.
Air line (approximately)
299 kilometers
161 nautical miles