The calculated distance (air line) between Kumburgaz and Beylikdüzü is approximately 9 miles respectively 14 kilometers.
By car or train, the actual journey to Beylikdüzü is certainly longer, as only the direct route (as the crow flies) between Kumburgaz and Beylikdüzü has been calculated here.
Air line (approximately)
14 kilometers
8 nautical miles