The calculated distance (air line) between Sabadell and Sant Boi de Llobregat is approximately 14 miles respectively 23 kilometers.
By car or train, the actual journey to Sant Boi de Llobregat is certainly longer, as only the direct route (as the crow flies) between Sabadell and Sant Boi de Llobregat has been calculated here.
Air line (approximately)
23 kilometers
12 nautical miles