The calculated distance (air line) between Alcalá de Henares and Pinar de Chamartín is approximately 16 miles respectively 26 kilometers.
By car or train, the actual journey to Pinar de Chamartín is certainly longer, as only the direct route (as the crow flies) between Alcalá de Henares and Pinar de Chamartín has been calculated here.
Air line (approximately)
26 kilometers
14 nautical miles