The calculated distance (air line) between Sant Andreu de Llavaneres and Zaragoza is approximately 174 miles respectively 280 kilometers.
By car or train, the actual journey to Zaragoza is certainly longer, as only the direct route (as the crow flies) between Sant Andreu de Llavaneres and Zaragoza has been calculated here.
Air line (approximately)
280 kilometers
151 nautical miles