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