Followed the route starting at Abondance, the climb starts at Bonnevaux and up to Col du Corbier where the off road starts, the climb continues. At about the +550 meter point there is a great view of Mont Blanc. At this point I had used 50% of my 500w battery. Shortly after the back side of the Abondance ski area comes into view. From the base of the lift you follow a steep rough path up at the same gradient as the ski slope, steep and rough, I had to use the walk mode which is a rare occurrence for me. The last part is rideable and takes you to the very top of the ski area. It all down from there. Route was well marked and I use 60% of 500W. Will try it the other way next time.