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