The calculated distance (air line) between L'Hospitalet de Llobregat and Castelló de la Plana is approximately 147 miles respectively 237 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 L'Hospitalet de Llobregat and Castelló de la Plana has been calculated here.
Air line (approximately)
237 kilometers
128 nautical miles