The calculated distance (air line) between Büyükçekmece and Selimpaşa is approximately 12 miles respectively 19 kilometers.
By car or train, the actual journey to Selimpaşa is certainly longer, as only the direct route (as the crow flies) between Büyükçekmece and Selimpaşa has been calculated here.
Air line (approximately)
19 kilometers
10 nautical miles