The calculated distance (air line) between Sallent and L'Ametlla del Vallès is approximately 22 miles respectively 36 kilometers.
By car or train, the actual journey to L'Ametlla del Vallès is certainly longer, as only the direct route (as the crow flies) between Sallent and L'Ametlla del Vallès has been calculated here.
Air line (approximately)
36 kilometers
19 nautical miles