The calculated distance (air line) between Barajas de Madrid and Fuente el Saz is approximately 11 miles respectively 18 kilometers.
By car or train, the actual journey to Fuente el Saz is certainly longer, as only the direct route (as the crow flies) between Barajas de Madrid and Fuente el Saz has been calculated here.
Air line (approximately)
18 kilometers
10 nautical miles