The calculated distance (air line) between Knyazhichi and Khmelnytskyi is approximately 184 miles respectively 296 kilometers.
By car or train, the actual journey to Khmelnytskyi is certainly longer, as only the direct route (as the crow flies) between Knyazhichi and Khmelnytskyi has been calculated here.
Air line (approximately)
296 kilometers
160 nautical miles