The calculated distance (air line) between Novyy Rogachik and Kumylzhenskaya is approximately 106 miles respectively 171 kilometers.
By car or train, the actual journey to Kumylzhenskaya is certainly longer, as only the direct route (as the crow flies) between Novyy Rogachik and Kumylzhenskaya has been calculated here.
Air line (approximately)
171 kilometers
92 nautical miles