A friend and I plan to go from Son La to Dien Bien Phu by motorbike (around 150km). Each of us will drive a Honda Win 110cc. As for the other related questions I have only found a couple of articles mentioning this route so I'd just like to get feedback from more travellers.
The QL6 national road followed by the Quốc lộ 279 national road seem to be the simplest way to do this journey, however I wonder if there is more convenient route (e.g. less traffic, or better scenery)?