The calculated distance (air line) between Dinskaya and Rostov-na-Donu is approximately 141 miles respectively 227 kilometers.
By car or train, the actual journey to Rostov-na-Donu is certainly longer, as only the direct route (as the crow flies) between Dinskaya and Rostov-na-Donu has been calculated here.
Air line (approximately)
227 kilometers
123 nautical miles