The calculated distance (air line) between Valladolid and Donostia / San Sebastián is approximately 181 miles respectively 291 kilometers.
By car or train, the actual journey to Donostia / San Sebastián is certainly longer, as only the direct route (as the crow flies) between Valladolid and Donostia / San Sebastián has been calculated here.
Air line (approximately)
291 kilometers
157 nautical miles