The calculated distance (air line) between Monforte de Lemos and Valladolid is approximately 155 miles respectively 250 kilometers.
By car or train, the actual journey to Valladolid is certainly longer, as only the direct route (as the crow flies) between Monforte de Lemos and Valladolid has been calculated here.
Air line (approximately)
250 kilometers
135 nautical miles