The calculated distance (air line) between El Masnou and Sant Andreu de Llavaneres is approximately 10 miles respectively 17 kilometers.
By car or train, the actual journey to Sant Andreu de Llavaneres is certainly longer, as only the direct route (as the crow flies) between El Masnou and Sant Andreu de Llavaneres has been calculated here.
Air line (approximately)
17 kilometers
9 nautical miles