There's not much in the way of tree cover i'm afraid. Anne and I walked it last July, starting at the northern end. I had to jog back to the start point for the car as she could hardly walk after it
If i was to do it again, I'd park at Carn an Tuirc end then walk the 2 and a bit miles to the Creag Leacach end. It's far better out of the way at the start than the end.