The calculated distance (air line) between Naberezhnyye Chelny and Kizner is approximately 52 miles respectively 83 kilometers.
By car or train, the actual journey to Kizner is certainly longer, as only the direct route (as the crow flies) between Naberezhnyye Chelny and Kizner has been calculated here.
Air line (approximately)
83 kilometers
45 nautical miles