The calculated distance (air line) between Medina de Pomar and Puente de Vallecas is approximately 175 miles respectively 282 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 Medina de Pomar and Puente de Vallecas has been calculated here.
Air line (approximately)
282 kilometers
152 nautical miles