The calculated distance (air line) between San Gaspar Tlahuelilpan and Ciudad Nezahualcoyotl is approximately 36 miles respectively 58 kilometers.
By car or train, the actual journey to Ciudad Nezahualcoyotl is certainly longer, as only the direct route (as the crow flies) between San Gaspar Tlahuelilpan and Ciudad Nezahualcoyotl has been calculated here.
Air line (approximately)
58 kilometers
32 nautical miles