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