The calculated distance (air line) between Sant Cugat del Vallès and Llefià is approximately 7 miles respectively 12 kilometers.
By car or train, the actual journey to Llefià is certainly longer, as only the direct route (as the crow flies) between Sant Cugat del Vallès and Llefià has been calculated here.
Air line (approximately)
12 kilometers
6 nautical miles