The calculated distance (air line) between Vilkaviskis and Naujamiestis is approximately 89 miles respectively 144 kilometers.
By car or train, the actual journey to Naujamiestis is certainly longer, as only the direct route (as the crow flies) between Vilkaviskis and Naujamiestis has been calculated here.
Air line (approximately)
144 kilometers
78 nautical miles