The calculated distance (air line) between Sancaktepe and Beylikdüzü is approximately 31 miles respectively 50 kilometers.
By car or train, the actual journey to Beylikdüzü is certainly longer, as only the direct route (as the crow flies) between Sancaktepe and Beylikdüzü has been calculated here.
Air line (approximately)
50 kilometers
27 nautical miles