The calculated distance (air line) between Nizhnyaya Ala-Archa and Kerben is approximately 174 miles respectively 281 kilometers.
By car or train, the actual journey to Kerben is certainly longer, as only the direct route (as the crow flies) between Nizhnyaya Ala-Archa and Kerben has been calculated here.
Air line (approximately)
281 kilometers
151 nautical miles