The Great Wall is the largest human cultural heritage in China and even in the world. It began to be built in the Warring States period in the 7th century B.C. and stopped in the 17th century. It has been built for more than 2000 years. It is distributed in 15 provinces in northern China, with a total length of more than 50000 km. It is the oldest and most widely distributed ancient architectural remains in the world. There are more than twenty thousand Marathon running events in China today while there just about 20 and 30 Marathon six years ago. Great Wall marathon has been the top options race events for the international runners around the world.