The calculated distance (air line) between Povolzhskiy and Neftegorsk is approximately 79 miles respectively 128 kilometers.
By car or train, the actual journey to Neftegorsk is certainly longer, as only the direct route (as the crow flies) between Povolzhskiy and Neftegorsk has been calculated here.
Air line (approximately)
128 kilometers
69 nautical miles