The calculated distance (air line) between Khmelnytskyi and Chernivtsi is approximately 91 miles respectively 147 kilometers.
By car or train, the actual journey to Chernivtsi is certainly longer, as only the direct route (as the crow flies) between Khmelnytskyi and Chernivtsi has been calculated here.
Air line (approximately)
147 kilometers
79 nautical miles