The calculated distance (air line) between Meliana and Puente de Vallecas is approximately 186 miles respectively 299 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 Meliana and Puente de Vallecas has been calculated here.
Air line (approximately)
299 kilometers
162 nautical miles