The calculated distance (air line) between Bahçelievler and Ataşehir is approximately 13 miles respectively 22 kilometers.
By car or train, the actual journey to Ataşehir is certainly longer, as only the direct route (as the crow flies) between Bahçelievler and Ataşehir has been calculated here.
Air line (approximately)
22 kilometers
12 nautical miles