The calculated distance (air line) between Rostov-na-Donu and Gukovo is approximately 58 miles respectively 94 kilometers.
By car or train, the actual journey to Gukovo is certainly longer, as only the direct route (as the crow flies) between Rostov-na-Donu and Gukovo has been calculated here.
Air line (approximately)
94 kilometers
51 nautical miles