The calculated distance (air line) between Olesa de Montserrat and L'Hospitalet de Llobregat is approximately 17 miles respectively 27 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 Olesa de Montserrat and L'Hospitalet de Llobregat has been calculated here.
Air line (approximately)
27 kilometers
14 nautical miles