The calculated distance (air line) between Murcia and Castelló de la Plana is approximately 150 miles respectively 241 kilometers.
By car or train, the actual journey to Castelló de la Plana is certainly longer, as only the direct route (as the crow flies) between Murcia and Castelló de la Plana has been calculated here.
Air line (approximately)
241 kilometers
130 nautical miles