The calculated distance (air line) between Zacamulpa and Ecatepec de Morelos is approximately 25 miles respectively 40 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 Zacamulpa and Ecatepec de Morelos has been calculated here.
Air line (approximately)
40 kilometers
21 nautical miles