The calculated distance (air line) between Sant Just Desvern and L'Hospitalet de Llobregat is approximately 2 miles respectively 4 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 Just Desvern and L'Hospitalet de Llobregat has been calculated here.
Air line (approximately)
4 kilometers
2 nautical miles