The calculated distance (air line) between Sant Feliu de Llobregat and Sabadell is approximately 11 miles respectively 18 kilometers.
By car or train, the actual journey to Sabadell is certainly longer, as only the direct route (as the crow flies) between Sant Feliu de Llobregat and Sabadell has been calculated here.
Air line (approximately)
18 kilometers
10 nautical miles