The calculated distance (air line) between Novovolynsk and Khmelnytskyi is approximately 154 miles respectively 248 kilometers.
By car or train, the actual journey to Khmelnytskyi is certainly longer, as only the direct route (as the crow flies) between Novovolynsk and Khmelnytskyi has been calculated here.
Air line (approximately)
248 kilometers
134 nautical miles