The calculated distance (air line) between Tecamachalco and Tlalnepantla is approximately 20 miles respectively 32 kilometers.
By car or train, the actual journey to Tlalnepantla is certainly longer, as only the direct route (as the crow flies) between Tecamachalco and Tlalnepantla has been calculated here.
Air line (approximately)
32 kilometers
17 nautical miles