The calculated distance (air line) between Dinskaya and Staromyshastovskaya is approximately 11 miles respectively 18 kilometers.
By car or train, the actual journey to Staromyshastovskaya is certainly longer, as only the direct route (as the crow flies) between Dinskaya and Staromyshastovskaya has been calculated here.
Air line (approximately)
18 kilometers
10 nautical miles