The calculated distance (air line) between Cornellà de Llobregat and Llefià is approximately 9 miles respectively 15 kilometers.
By car or train, the actual journey to Llefià is certainly longer, as only the direct route (as the crow flies) between Cornellà de Llobregat and Llefià has been calculated here.
Air line (approximately)
15 kilometers
8 nautical miles