The calculated distance (air line) between Khorostkiv and Dunayivtsi is approximately 48 miles respectively 77 kilometers.
By car or train, the actual journey to Dunayivtsi is certainly longer, as only the direct route (as the crow flies) between Khorostkiv and Dunayivtsi has been calculated here.
Air line (approximately)
77 kilometers
41 nautical miles