The calculated distance (air line) between Diyarbakır and Kocaköy is approximately 30 miles respectively 48 kilometers.
By car or train, the actual journey to Kocaköy is certainly longer, as only the direct route (as the crow flies) between Diyarbakır and Kocaköy has been calculated here.
Air line (approximately)
48 kilometers
26 nautical miles