The calculated distance (air line) between Radomyshl and Khmelnytskyi is approximately 125 miles respectively 201 kilometers.
By car or train, the actual journey to Khmelnytskyi is certainly longer, as only the direct route (as the crow flies) between Radomyshl and Khmelnytskyi has been calculated here.
Air line (approximately)
201 kilometers
108 nautical miles