One route from Paris to Bordeaux is via Tours following the GR 655. Editions Lepère publish a good guidebook. See more here.
Also check out the various posts in th the Voie de Tours thread in the Routes in France section of the forum.
Just a quick post here about our experience walking the Camino with my fur baby Fuji. Still travelling (another 12h drive day today), so full write up will come bit by bit over the next few days.
While preparing for this trip, I...