The calculated distance (air line) between Izhevsk and Naberezhnyye Chelny is approximately 83 miles respectively 134 kilometers.
By car or train, the actual journey to Naberezhnyye Chelny is certainly longer, as only the direct route (as the crow flies) between Izhevsk and Naberezhnyye Chelny has been calculated here.
Air line (approximately)
134 kilometers
72 nautical miles