In reply to vanbe052:
I would add the southern region of Suisse to the mix as well. For the long trad routes (weather permitting). Bregalia, Salbit and Grimsel-Furka pass region. Perhaps Cadarese and Orco (both in IT) should also be added to the mix. Verdon (FR) should also be in the mix.
There are also usable public transport, to get between the locales (usually bus + trains + bus). But I would also consider renting a car. As if the weather is crappy, a half a days drive will get you to another stellar place. In fact, it takes less than a day to drive from Verdon/Ceuse to the Dolomites. But most likely around 2 days with public transport (or perhaps even more).
My suggestion would be to fly to perhaps Italy and start from there with a rental car, climbing in Dolomites, Arco and Cadarese, then Orco and drive into France for some Cham action. Then loop back to Italy via Verdon, Ceuse and Finaly Liguria and other stuff near the cost. Fly from Italy to Barcelona and again, get a car to sample the different crags there.
Generally a small car isn't that expensive in IT and Spain, a bit more in France and spendy in CH. But you might need to buy the vignetta for CH (around 40 CHF), if you cross the border...
