The calculated distance (air line) between Gresovskiy and Chernomorskoye is approximately 73 miles respectively 118 kilometers.
By car or train, the actual journey to Chernomorskoye is certainly longer, as only the direct route (as the crow flies) between Gresovskiy and Chernomorskoye has been calculated here.
Air line (approximately)
118 kilometers
64 nautical miles