The calculated distance (air line) between Temnikov and Nizhniy Novgorod is approximately 121 miles respectively 195 kilometers.
By car or train, the actual journey to Nizhniy Novgorod is certainly longer, as only the direct route (as the crow flies) between Temnikov and Nizhniy Novgorod has been calculated here.
Air line (approximately)
195 kilometers
105 nautical miles