The Mutianyu Great Wall is located in Huairou District, 73 kilometers (45.4 miles) from Beijing proper. Mutianyu is mentioned as the most beautiful section of the wall.
If you want to get to Murianyu Great Wall by your own, you can get there by the following buses.
Option one: Take Direct Bus No.867
You can take Tourism Bus No.867 at Dongzhimen（东直门）Outer Station to Mutianyu directly. It will take you about 2.5 hours to get there. The bus departs from Dongzhimen(东直门) Outer Station to the Mutianyu Great Wall at 07:00AM every day. The frequency is 30 minutes. The same bus leaves from Mutianyu to Dongzhimen(东直门) at 2:00PM and 3:00PM every day and when it’s pass 15：00 the bus departs from Mutianyu back to Beijing in every 30 minutes. And the last bus departs at 17:00 every day. The bus ticket fare for a single trip is 16RMB/Person.
Attention: The bus No.867 is only available from late Match to the middle of November (peak-season).
Option two: Take Bus No. 916
You can also take the No. 916 Bus or the 916 express line. The bus runs from Dongzhimen(东直门) to Huairou sation（怀柔北站）. You can get off the bus at Qingchun Lu Beikou,Huairou Bei Dajie（怀柔北大街） or the erminnus, and then take a taxi to Mutianyu Great Way from there. The bus journey normally takes about one hour. The taxi fare should be around 50CNY.If you are visiting the Mutianyu great wall during a peak season, it is quite possible to see some other tourists there trying to get taxi to the Mutianyu great wall as well. You could try to share a taxi with them and go Dutch with the taxi bill, in this way, the cost should be about just 10 CNY. Alternatively, you could choose to change to Shayudongtai(沙浴洞台) bus to go to the Mutianyu great wall after you get off at the Huairou Bei Dajie（怀柔北大街）. This bus departs every 30 minutes.
Option three: Take Special Tourism Tour bus No. 6
From April 15th to Oct. 15th, there is special tourism tour bus No.6 running from Dong Si Shi Tiao Brige, Hangtian Brige, Heping Street North End, and Xuanwumen. It arrives at Mutianyu Great wall. The bus runs between 6:30AM and 8:00AM. It will cost you 36RMB/Person for the ordinary bus and 45PMB/Person for the air-conditioned bus.