The calculated distance (air line) between Zacatepec and Ecatepec de Morelos is approximately 102 miles respectively 165 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 Zacatepec and Ecatepec de Morelos has been calculated here.
Air line (approximately)
165 kilometers
89 nautical miles