The calculated distance (air line) between Gökçebey and Bahçelievler is approximately 172 miles respectively 277 kilometers.
By car or train, the actual journey to Bahçelievler is certainly longer, as only the direct route (as the crow flies) between Gökçebey and Bahçelievler has been calculated here.
Air line (approximately)
277 kilometers
149 nautical miles