The calculated distance (air line) between Nizhniy Novgorod and Novosmolinskiy is approximately 37 miles respectively 59 kilometers.
By car or train, the actual journey to Novosmolinskiy is certainly longer, as only the direct route (as the crow flies) between Nizhniy Novgorod and Novosmolinskiy has been calculated here.
Air line (approximately)
59 kilometers
32 nautical miles