The calculated distance (air line) between Balaklava and Nizhnegorskiy is approximately 85 miles respectively 137 kilometers.
By car or train, the actual journey to Nizhnegorskiy is certainly longer, as only the direct route (as the crow flies) between Balaklava and Nizhnegorskiy has been calculated here.
Air line (approximately)
137 kilometers
74 nautical miles