Between Witches Bridge and the forest entry the route is on a back road.
If you've never biked in this area before get ready to be surprised! Galloway Forest covers a huge area with a big variety of scenery. True, the mountains aren't as high as in the highlands but you might not know it to look at them. A big plus is that Galloway is just so quiet.
This route is quite long, you might prefer to do it over two days. Most of the route is on forest dirt road but there is one section of just over a mile where you will need to walk.
This section begins with a steep climb but after that it is mainly downhill so it should be reasonably fast. Three miles before Glentrool Village turn left at the mountain bike marker post that signs the final part of the route. Follow the markers through the forest to Glen Trool visitor centre.