The calculated distance (air line) between Santa María Zacatepec and Ecatepec de Morelos is approximately 56 miles respectively 90 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 Santa María Zacatepec and Ecatepec de Morelos has been calculated here.
Air line (approximately)
90 kilometers
49 nautical miles