The calculated distance (air line) between Ecatepec de Morelos and Ciudad Valles is approximately 165 miles respectively 266 kilometers.
By car or train, the actual journey to Ciudad Valles is certainly longer, as only the direct route (as the crow flies) between Ecatepec de Morelos and Ciudad Valles has been calculated here.
Air line (approximately)
266 kilometers
144 nautical miles