The calculated distance (air line) between Bağcılar and Sancaktepe is approximately 20 miles respectively 32 kilometers.
By car or train, the actual journey to Sancaktepe is certainly longer, as only the direct route (as the crow flies) between Bağcılar and Sancaktepe has been calculated here.
Air line (approximately)
32 kilometers
17 nautical miles