The calculated distance (air line) between Arroyomolinos and Boadilla del Monte is approximately 10 miles respectively 15 kilometers.
By car or train, the actual journey to Boadilla del Monte is certainly longer, as only the direct route (as the crow flies) between Arroyomolinos and Boadilla del Monte has been calculated here.
Air line (approximately)
15 kilometers
8 nautical miles