The calculated distance (air line) between Fuente el Saz and Alcalá de Henares is approximately 13 miles respectively 21 kilometers.
By car or train, the actual journey to Alcalá de Henares is certainly longer, as only the direct route (as the crow flies) between Fuente el Saz and Alcalá de Henares has been calculated here.
Air line (approximately)
21 kilometers
11 nautical miles