Silk Road GPS Tracks ?

Hi:

I was just day-dreaming about a future ride along the ancient Silk Road (connecting Istanbul, Turkey or Damascus, Syria and Xian, China), and I was asking myself if there could be already some GPS tracks of people that had already made this route

so, my question: are there some links where I could find posted GPS tracks of this route: the Silk Road, between Istanbul or Damascus and Xian, China, made by fellow cyclists ?

thank you very much

greetings