The calculated distance (air line) between Ulan-Ude and Krasnyy Chikoy is approximately 113 miles respectively 181 kilometers.
By car or train, the actual journey to Krasnyy Chikoy is certainly longer, as only the direct route (as the crow flies) between Ulan-Ude and Krasnyy Chikoy has been calculated here.
Air line (approximately)
181 kilometers
98 nautical miles