The calculated distance (air line) between San Felipe Tlalmimilolpan and Ecatepec de Morelos is approximately 46 miles respectively 73 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 San Felipe Tlalmimilolpan and Ecatepec de Morelos has been calculated here.
Air line (approximately)
73 kilometers
40 nautical miles