The calculated distance (air line) between Sant Adrià de Besòs and Ciutat Vella is approximately 4 miles respectively 7 kilometers.
By car or train, the actual journey to Ciutat Vella is certainly longer, as only the direct route (as the crow flies) between Sant Adrià de Besòs and Ciutat Vella has been calculated here.
Air line (approximately)
7 kilometers
4 nautical miles