Collectively, they stretch from Liaodong in the east to Lop Lake in the west, from the present-day Sino–Russian border in the north to Tao River (Taohe) in the south; along an arc that roughly delineates the edge of the Mongolian steppe; spanning 21,196.18 km (13,170.70 mi) in total.

Out of that number, 6259 km (3889 miles) is the length of the actual wall. 359 km (223 miles) of it is made up of trenches. Natural barriers such as rivers and hills measure 2232 km (1387 miles). Other archaeological surveys found that the entire length of the wall (including its network of branches) stretches up to 21196 km (13171 miles).

Length: The total length of the Great Wall is 21196.18km (13170 miles), among which the well-preserved Ming Dynasty (A.D. 1368-1644) Great Wall is 8851km (5,500 miles). >>Read More about How Long is the Great Wall of China Height: The average height of the walls is 7.8m (25.6 feet) and the tallest is 14m (46 feet).

The official length is 21,196.18 km (13,170.7 mi), half the equator! But, nearly 1/3 of the Great Wall has disappeared without a trace. 3. The typical height of the Great Wall is 5–8 meters (16–26 feet), around three to five times the height of an adult.

The Ming built the wall featuring over 25,000 massive watchtowers and ranging in height from 16-26 feet (5-8 m), 20 feet across the bottom (6 m) and 16 feet across the top (5 m).