The calculated distance (air line) between Khorostkiv and Chernivtsi is approximately 64 miles respectively 103 kilometers.
By car or train, the actual journey to Chernivtsi is certainly longer, as only the direct route (as the crow flies) between Khorostkiv and Chernivtsi has been calculated here.
Air line (approximately)
103 kilometers
55 nautical miles