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