The calculated distance (air line) between Esplugues de Llobregat and Sant Andreu is approximately 7 miles respectively 11 kilometers.
By car or train, the actual journey to Sant Andreu is certainly longer, as only the direct route (as the crow flies) between Esplugues de Llobregat and Sant Andreu has been calculated here.
Air line (approximately)
11 kilometers
6 nautical miles