The calculated distance (air line) between Vilaseca and Caldes de Montbui is approximately 30 miles respectively 48 kilometers.
By car or train, the actual journey to Caldes de Montbui is certainly longer, as only the direct route (as the crow flies) between Vilaseca and Caldes de Montbui has been calculated here.
Air line (approximately)
48 kilometers
26 nautical miles