The calculated distance (air line) between Şereflikoçhisar and Çankaya is approximately 77 miles respectively 123 kilometers.
By car or train, the actual journey to Çankaya is certainly longer, as only the direct route (as the crow flies) between Şereflikoçhisar and Çankaya has been calculated here.
Air line (approximately)
123 kilometers
67 nautical miles