The calculated distance (air line) between Sant Quirze del Vallès and L'Hospitalet de Llobregat is approximately 12 miles respectively 19 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 Sant Quirze del Vallès and L'Hospitalet de Llobregat has been calculated here.
Air line (approximately)
19 kilometers
10 nautical miles