The calculated distance (air line) between Sant Vicenç de Montalt and Premià de Mar is approximately 10 miles respectively 15 kilometers.
By car or train, the actual journey to Premià de Mar is certainly longer, as only the direct route (as the crow flies) between Sant Vicenç de Montalt and Premià de Mar has been calculated here.
Air line (approximately)
15 kilometers
8 nautical miles