The calculated distance (air line) between Oliver-Valdefierro and L'Hospitalet de Llobregat is approximately 158 miles respectively 255 kilometers.
By car or train, the actual journey to L'Hospitalet de Llobregat is certainly longer, as only the direct route (as the crow flies) between Oliver-Valdefierro and L'Hospitalet de Llobregat has been calculated here.
Air line (approximately)
255 kilometers
137 nautical miles