The calculated distance (air line) between Mayskiy and Rostov-na-Donu is approximately 37 miles respectively 59 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 Mayskiy and Rostov-na-Donu has been calculated here.
Air line (approximately)
59 kilometers
32 nautical miles