Total length of Great wall of China is____________?

The Great Wall of China has a total length of approximately 21,196 kilometers (about 13,171 miles). It is the longest man-made structure in the world.

Built over many centuries by different Chinese dynasties, it was primarily constructed for defense against invasions.

Knowing its length in both kilometers and miles helps understand the scale of this world wonder, which is important for general knowledge and exams.