The calculated distance (air line) between Las Matas and Puente de Vallecas is approximately 17 miles respectively 27 kilometers.
By car or train, the actual journey to Puente de Vallecas is certainly longer, as only the direct route (as the crow flies) between Las Matas and Puente de Vallecas has been calculated here.
Air line (approximately)
27 kilometers
14 nautical miles