The calculated distance (air line) between Kerben and Uch-Korgon is approximately 89 miles respectively 143 kilometers.
By car or train, the actual journey to Uch-Korgon is certainly longer, as only the direct route (as the crow flies) between Kerben and Uch-Korgon has been calculated here.
Air line (approximately)
143 kilometers
77 nautical miles