From Lhasa via Everest BC, Kailash and Tsada to Kashgar, the road is about 3200 km. This is one of the biggest Himalayan adventures. In 2.5 weeks, the group has traveled almost the entire length of the Himalayas and Karakorum.
https://www.tibet-tours.com/758-Overland-Tour-Tibet-Everest-BC-Xinjiang-with-Kailash-Trekking.html