The calculated distance (air line) between Meco and Puente de Vallecas is approximately 21 miles respectively 33 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 Meco and Puente de Vallecas has been calculated here.
Air line (approximately)
33 kilometers
18 nautical miles