The calculated distance (air line) between Knyazhichi and Bila Tserkva is approximately 54 miles respectively 87 kilometers.
By car or train, the actual journey to Bila Tserkva is certainly longer, as only the direct route (as the crow flies) between Knyazhichi and Bila Tserkva has been calculated here.
Air line (approximately)
87 kilometers
47 nautical miles