The calculated distance (air line) between Rostov-na-Donu and Matveyev Kurgan is approximately 46 miles respectively 74 kilometers.
By car or train, the actual journey to Matveyev Kurgan is certainly longer, as only the direct route (as the crow flies) between Rostov-na-Donu and Matveyev Kurgan has been calculated here.
Air line (approximately)
74 kilometers
40 nautical miles