The calculated distance (air line) between Magnitogorsk and Tirlyanskiy is approximately 58 miles respectively 93 kilometers.
By car or train, the actual journey to Tirlyanskiy is certainly longer, as only the direct route (as the crow flies) between Magnitogorsk and Tirlyanskiy has been calculated here.
Air line (approximately)
93 kilometers
50 nautical miles