Without paying too much, you're able to experience the wild and Great Wall at Jingshanling. Far from the tourists and crowds. Moderate hiking 6km from middle gate of Jinshanling to east gate (from 1 April to 31 October).
Unguided self-hiking will enable you to have all the time by yourself. Not obliged to catch up with a big tour group or being forced to enter some shops.
Pick-up point: exit C of subway station Zhang Zi Zhong Lu of Line 5; Pick-up time: 08:00 a.m. After the pick-up, you'll head for Jinshanling Great Wall directly. It takes about 2 hours and a half to drive from the city of Beijing to Jinshanling Great Wall (around 136km). Main gate entrance tickets and shuttle bus ticket is included. From 1 April to 31 October, you can enter from the middle gate of Jinshanling, and get on the Great Wall from Brick Crenel (tower name) or Shalingkou. Walking along the Great Wall for about 6km, you can get down from East Five Window tower and exit from East Gate of Jinshanling. The driver will wait for you at the parking lot out of East Gate. The hiking is a little bit strenuous. From 1 November to 31 March, you would have to enter and exit from the same gate : middle gate. The driver waits for you at the same place. Please bring your own food and drink for lunch, and take your passport with you for the tour!
You will make your own way to the meeting points