The calculated distance (air line) between Yadrin and Nizhniy Novgorod is approximately 89 miles respectively 143 kilometers.
By car or train, the actual journey to Nizhniy Novgorod is certainly longer, as only the direct route (as the crow flies) between Yadrin and Nizhniy Novgorod has been calculated here.
Air line (approximately)
143 kilometers
77 nautical miles