The calculated distance (air line) between Taradell and La Roca del Vallès is approximately 20 miles respectively 33 kilometers.
By car or train, the actual journey to La Roca del Vallès is certainly longer, as only the direct route (as the crow flies) between Taradell and La Roca del Vallès has been calculated here.
Air line (approximately)
33 kilometers
18 nautical miles