The calculated distance (air line) between Ufa and Naberezhnyye Chelny is approximately 156 miles respectively 251 kilometers.
By car or train, the actual journey to Naberezhnyye Chelny is certainly longer, as only the direct route (as the crow flies) between Ufa and Naberezhnyye Chelny has been calculated here.
Air line (approximately)
251 kilometers
135 nautical miles