The calculated distance (air line) between Sant Vicenç de Montalt and Llefià is approximately 18 miles respectively 29 kilometers.
By car or train, the actual journey to Llefià is certainly longer, as only the direct route (as the crow flies) between Sant Vicenç de Montalt and Llefià has been calculated here.
Air line (approximately)
29 kilometers
15 nautical miles