The calculated distance (air line) between Salou and L'Hospitalet de Llobregat is approximately 54 miles respectively 86 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 Salou and L'Hospitalet de Llobregat has been calculated here.
Air line (approximately)
86 kilometers
46 nautical miles