The calculated distance (air line) between Tecamachalco and Ecatepec de Morelos is approximately 18 miles respectively 29 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 Tecamachalco and Ecatepec de Morelos has been calculated here.
Air line (approximately)
29 kilometers
16 nautical miles