The calculated distance (air line) between Leganés and Moncloa-Aravaca is approximately 8 miles respectively 12 kilometers.
By car or train, the actual journey to Moncloa-Aravaca is certainly longer, as only the direct route (as the crow flies) between Leganés and Moncloa-Aravaca has been calculated here.
Air line (approximately)
12 kilometers
7 nautical miles