The calculated distance (air line) between Centelles and L'Hospitalet de Llobregat is approximately 31 miles respectively 50 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 Centelles and L'Hospitalet de Llobregat has been calculated here.
Air line (approximately)
50 kilometers
27 nautical miles