The calculated distance (air line) between Khorostkiv and Khmelnytskyi is approximately 50 miles respectively 80 kilometers.
By car or train, the actual journey to Khmelnytskyi is certainly longer, as only the direct route (as the crow flies) between Khorostkiv and Khmelnytskyi has been calculated here.
Air line (approximately)
80 kilometers
43 nautical miles