The calculated distance (air line) between Kadom and Nizhniy Novgorod is approximately 136 miles respectively 219 kilometers.
By car or train, the actual journey to Nizhniy Novgorod is certainly longer, as only the direct route (as the crow flies) between Kadom and Nizhniy Novgorod has been calculated here.
Air line (approximately)
219 kilometers
118 nautical miles