The calculated distance (air line) between Ecatepec de Morelos and Huamantla is approximately 77 miles respectively 123 kilometers.
By car or train, the actual journey to Huamantla is certainly longer, as only the direct route (as the crow flies) between Ecatepec de Morelos and Huamantla has been calculated here.
Air line (approximately)
123 kilometers
67 nautical miles