The calculated distance (air line) between Kazan and Nizhniye Vyazovyye is approximately 23 miles respectively 37 kilometers.
By car or train, the actual journey to Nizhniye Vyazovyye is certainly longer, as only the direct route (as the crow flies) between Kazan and Nizhniye Vyazovyye has been calculated here.
Air line (approximately)
37 kilometers
20 nautical miles