Walking Dordogne has posted on their web site that as of next spring they will have 5 self-guided hikes, all of about 30km, however the hikes can be combined to create much longer or shorter hikes.
Walking Dordogne will supply the walkers with a detailed map and a hand held GPS with all the routes incl. places of interest, places to eat / drink, accommodation if needed and lots more.
Details about the hikes, or prices were not mentioned on their site.
The original article can be found here: http://walkingdordogne.com/wdnews/