The calculated distance (air line) between Puente de Vallecas and Alcobendas is approximately 11 miles respectively 17 kilometers.
By car or train, the actual journey to Alcobendas is certainly longer, as only the direct route (as the crow flies) between Puente de Vallecas and Alcobendas has been calculated here.
Air line (approximately)
17 kilometers
9 nautical miles