The calculated distance (air line) between Kanash and Nizhniy Novgorod is approximately 146 miles respectively 236 kilometers.
By car or train, the actual journey to Nizhniy Novgorod is certainly longer, as only the direct route (as the crow flies) between Kanash and Nizhniy Novgorod has been calculated here.
Air line (approximately)
236 kilometers
127 nautical miles