The calculated distance (air line) between Borodianka and Khmelnytskyi is approximately 156 miles respectively 250 kilometers.
By car or train, the actual journey to Khmelnytskyi is certainly longer, as only the direct route (as the crow flies) between Borodianka and Khmelnytskyi has been calculated here.
Air line (approximately)
250 kilometers
135 nautical miles