Cahors to Pamplona: Advice and Tips Greatly Appreciated

Hi ziggy,
I took slightly longer than that, but I'm a slower walker, and had some short days and some rest days. I am sure it is possible, but It is hard to know how long it will take you, as people's pace and daily distance vary. If you started in Moissac, it might make a Pamplona finish a bit more certain in three weeks, (and you can get to Moissac by train).

There are two sites you might find helpful in your planning, at least as far as SJPP. The first one gives you more idea about distances between places, and where some accommodation is available. http://www.chemindecompostelle.com/Selection/CarteFrance.html
The other is a 'planner' where you can get ideas about distances between places. http://www.godesalco.com/plan/podense covers the route as far as Roncesvalles, and http://www.godesalco.com/plan/frances covers the section to Pamplona.

You might get more ideas/answers from the Le Puy section of the Forum, as most of your route would be in France. http://www.caminodesantiago.me/board/the-le-puy-route/
Margaret

It is doable in 3 weeks if you don't mind some long days in the middle of the section from Cahors-SJPDP. Why not start from Cahors, walk without the time pressure and just finish when you run out of time?