The Great Wall of China is 5,500.3miles long

1. The length of the entire Great Wall of China, with all of its branches, stretches for 5,500.3mi (8,851.8 km). This is made up of 3,889.5 mi (6,259.6 km) sections of wall, 223.5 mi (359.7 km) of trenches and 1,387.2 mi (2,232.5 km) of natural defensive barriers such as hills and rivers.