The calculated distance (air line) between Novooleksiyivka and Nizhnegorskiy is approximately 54 miles respectively 87 kilometers.
By car or train, the actual journey to Nizhnegorskiy is certainly longer, as only the direct route (as the crow flies) between Novooleksiyivka and Nizhnegorskiy has been calculated here.
Air line (approximately)
87 kilometers
47 nautical miles