The calculated distance (air line) between Novyy Rogachik and Akhtubinsk is approximately 101 miles respectively 162 kilometers.
By car or train, the actual journey to Akhtubinsk is certainly longer, as only the direct route (as the crow flies) between Novyy Rogachik and Akhtubinsk has been calculated here.
Air line (approximately)
162 kilometers
87 nautical miles