So here's some good trail beta for you. Here are some photos of the area around Turquoise Lake. You'll be here descending off of Sugar Loaf Mt. So we got some shots of the area - and you have some dirt/trail from the descent actually. I messed up on the last video - I said this is where you'll go up to Sugar Loaf, however, it looks like you'll be going down through the area - in a descent - instead of an incline.
This video shows the way up Sugarloaf. By the looks of the map, you'll be on this dirt road. It's rocky, but not technical. It's a slow gradual incline up with beautiful views. Better done with MTB tires instead of my Volkswagen.