The calculated distance (air line) between Leganés and Pinar de Chamartín is approximately 12 miles respectively 19 kilometers.
By car or train, the actual journey to Pinar de Chamartín is certainly longer, as only the direct route (as the crow flies) between Leganés and Pinar de Chamartín has been calculated here.
Air line (approximately)
19 kilometers
10 nautical miles