The calculated distance (air line) between Gorodets and Nizhniy Novgorod is approximately 30 miles respectively 49 kilometers.
By car or train, the actual journey to Nizhniy Novgorod is certainly longer, as only the direct route (as the crow flies) between Gorodets and Nizhniy Novgorod has been calculated here.
Air line (approximately)
49 kilometers
26 nautical miles