The calculated distance (air line) between Kazlų Rūda and Naujamiestis is approximately 71 miles respectively 115 kilometers.
By car or train, the actual journey to Naujamiestis is certainly longer, as only the direct route (as the crow flies) between Kazlų Rūda and Naujamiestis has been calculated here.
Air line (approximately)
115 kilometers
62 nautical miles