The calculated distance (air line) between Tiana 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 Tiana and L'Hospitalet de Llobregat has been calculated here.
Air line (approximately)
19 kilometers
11 nautical miles