The calculated distance (air line) between Gasteiz / Vitoria and Alcobendas is approximately 167 miles respectively 268 kilometers.
By car or train, the actual journey to Alcobendas is certainly longer, as only the direct route (as the crow flies) between Gasteiz / Vitoria and Alcobendas has been calculated here.
Air line (approximately)
268 kilometers
145 nautical miles