The calculated distance (air line) between Vetluga and Nizhniy Novgorod is approximately 125 miles respectively 201 kilometers.
By car or train, the actual journey to Nizhniy Novgorod is certainly longer, as only the direct route (as the crow flies) between Vetluga and Nizhniy Novgorod has been calculated here.
Air line (approximately)
201 kilometers
108 nautical miles