The calculated distance (air line) between Umraniye and Merter Keresteciler is approximately 12 miles respectively 20 kilometers.
By car or train, the actual journey to Merter Keresteciler is certainly longer, as only the direct route (as the crow flies) between Umraniye and Merter Keresteciler has been calculated here.
Air line (approximately)
20 kilometers
11 nautical miles