The calculated distance (air line) between Kaštel Kambelovac and Rovinj is approximately 172 miles respectively 277 kilometers.
By car or train, the actual journey to Rovinj is certainly longer, as only the direct route (as the crow flies) between Kaštel Kambelovac and Rovinj has been calculated here.
Air line (approximately)
277 kilometers
150 nautical miles