How many days does the shortest cycling route from Jinan to Tibet take to Lhasa?

I am also a cycling enthusiast, and I don't have the courage and time, so first of all, I would like to express my heartfelt admiration and blessing to you! Refer to the online cycling experience route, ride all the way from Jinan, or take the Qinghai-Tibet line along the national road. G309 goes all the way to Yinchuan-Xining and then turns to G 109. I checked the map, it's about 3800 kilometers, and the altitude difference is 4500 meters. It's very hard. Prepare for 2 months first.

Waiting for your victory!