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