The calculated distance (air line) between Koz’modem’yansk and Nizhniy Novgorod is approximately 98 miles respectively 158 kilometers.
By car or train, the actual journey to Nizhniy Novgorod is certainly longer, as only the direct route (as the crow flies) between Koz’modem’yansk and Nizhniy Novgorod has been calculated here.
Air line (approximately)
158 kilometers
85 nautical miles