The calculated distance (air line) between Ripollet and L'Hospitalet de Llobregat is approximately 10 miles respectively 16 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 Ripollet and L'Hospitalet de Llobregat has been calculated here.
Air line (approximately)
16 kilometers
9 nautical miles