The calculated distance (air line) between San Miguel Ajusco and Ecatepec de Morelos is approximately 28 miles respectively 45 kilometers.
By car or train, the actual journey to Ecatepec de Morelos is certainly longer, as only the direct route (as the crow flies) between San Miguel Ajusco and Ecatepec de Morelos has been calculated here.
Air line (approximately)
45 kilometers
24 nautical miles