The calculated distance (air line) between Novoshakhtinskiy and Arsen’yev is approximately 56 miles respectively 90 kilometers.
By car or train, the actual journey to Arsen’yev is certainly longer, as only the direct route (as the crow flies) between Novoshakhtinskiy and Arsen’yev has been calculated here.
Air line (approximately)
90 kilometers
49 nautical miles