The calculated distance (air line) between Sentmenat and Montornès del Vallès is approximately 8 miles respectively 13 kilometers.
By car or train, the actual journey to Montornès del Vallès is certainly longer, as only the direct route (as the crow flies) between Sentmenat and Montornès del Vallès has been calculated here.
Air line (approximately)
13 kilometers
7 nautical miles