The calculated distance (air line) between Velyka Lepetykha and Sevastopol is approximately 178 miles respectively 287 kilometers.
By car or train, the actual journey to Sevastopol is certainly longer, as only the direct route (as the crow flies) between Velyka Lepetykha and Sevastopol has been calculated here.
Air line (approximately)
287 kilometers
155 nautical miles