The calculated distance (air line) between Cardona and L'Hospitalet de Llobregat is approximately 44 miles respectively 71 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 Cardona and L'Hospitalet de Llobregat has been calculated here.
Air line (approximately)
71 kilometers
38 nautical miles