The calculated distance (air line) between La Canonja and L'Hospitalet de Llobregat is approximately 51 miles respectively 81 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 La Canonja and L'Hospitalet de Llobregat has been calculated here.
Air line (approximately)
81 kilometers
44 nautical miles