The calculated distance (air line) between Pinar de Chamartín and Majadahonda is approximately 11 miles respectively 17 kilometers.
By car or train, the actual journey to Majadahonda is certainly longer, as only the direct route (as the crow flies) between Pinar de Chamartín and Majadahonda has been calculated here.
Air line (approximately)
17 kilometers
9 nautical miles