The calculated distance (air line) between Novyy Rogachik and Volgodonsk is approximately 119 miles respectively 192 kilometers.
By car or train, the actual journey to Volgodonsk is certainly longer, as only the direct route (as the crow flies) between Novyy Rogachik and Volgodonsk has been calculated here.
Air line (approximately)
192 kilometers
104 nautical miles