The calculated distance (air line) between Sant Vicenç dels Horts and Sant Andreu is approximately 10 miles respectively 16 kilometers.
By car or train, the actual journey to Sant Andreu is certainly longer, as only the direct route (as the crow flies) between Sant Vicenç dels Horts and Sant Andreu has been calculated here.
Air line (approximately)
16 kilometers
9 nautical miles