I'll be in Cham later this month- anyone up for the ride? I've been going there since the 80s when the Biollay was the place to camp. That was turned into a bus park and there was the forest. Now it's all illegal. I'm planning to stay up high in any case to avoid the valley. I may have to check up on that one French gal from several years ago though..
I lived in Italy for 3 years and was always able to find partners up in the Cham area. Many Euros use summitpost to find partners and that is where I normally went - aside from the local forums that were around the mtns I lived near.
The suggestions above to join the French Alpine Club are solid - they usually have offices where you can hang out and find partners.
In town, there is also the tourism building as well as the head of the Alpine Club where there are bulletin boards.
Good luck!
I've lived in cham for 3 years and i've climbed f-all .... i'm trying to investigate why this could be- hy do i climb more when im in ldonon working! hmmmm