The calculated distance (air line) between San Marcos and Ciudad Nezahualcoyotl is approximately 182 miles respectively 292 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 Marcos and Ciudad Nezahualcoyotl has been calculated here.
Air line (approximately)
292 kilometers
158 nautical miles