The calculated distance (air line) between Rozhdestveno and Neftegorsk is approximately 55 miles respectively 88 kilometers.
By car or train, the actual journey to Neftegorsk is certainly longer, as only the direct route (as the crow flies) between Rozhdestveno and Neftegorsk has been calculated here.
Air line (approximately)
88 kilometers
48 nautical miles