Dear Val and Malcolm,
I have found a site that is useful for planning walks in France, http://www.geoportail.gouv.fr/accueil, in fact you can look at quite a few things from the IGN walking routes to cadastrale plans. If you create an account (free) you can then draw your own walks, then save them locally on your computer in .kml format which you can download to a walking GPS device and can be used in conjunction with a paper map when walking.
Nev
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