The calculated distance (air line) between Chernomorskoye and Velyki Kopani is approximately 69 miles respectively 111 kilometers.
By car or train, the actual journey to Velyki Kopani is certainly longer, as only the direct route (as the crow flies) between Chernomorskoye and Velyki Kopani has been calculated here.
Air line (approximately)
111 kilometers
60 nautical miles