The calculated distance (air line) between Mariupol and Novoshcherbinovskaya is approximately 68 miles respectively 109 kilometers.
By car or train, the actual journey to Novoshcherbinovskaya is certainly longer, as only the direct route (as the crow flies) between Mariupol and Novoshcherbinovskaya has been calculated here.
Air line (approximately)
109 kilometers
59 nautical miles