A great loop with a nice overview of the Massif de l'Esterel.
After crossing the river (which is mostly empty in the summer), take the trail on the right, then follow the steep, rocky singletrack on the left, that will bring you to the top of the hill.
The rest of the trail is easier and more manageable.
When you cross the road, take the singletrack just in front, to avoid running on the parallel road, until the 'col de l'eveque'.
Follow the singletrack until the end. Note that this trail is shared with mountain bikers.