The calculated distance (air line) between Ciutat Vella and Sant Cugat del Vallès is approximately 8 miles respectively 12 kilometers.
By car or train, the actual journey to Sant Cugat del Vallès is certainly longer, as only the direct route (as the crow flies) between Ciutat Vella and Sant Cugat del Vallès has been calculated here.
Air line (approximately)
12 kilometers
7 nautical miles