I have never been with Geneva rando but I think they are at least middle aged. There are several groups and obviously i will push my own, being a member of which always looks good on a cv . Oxygene or oxygene 72 is a small group in roches sur Foron who often post on glocals and their programme is quite good. as it is in France i think you have to have a medical certificate or sign a waiver. Amis montagnards (I think you google MAM) get involved in snow shoes hikes alpinism eversthing - they own a a deconsecrated church part of whichn(the highest) has been converted into a climbing wall. Club Alpin Suisse sections both in Carouge and Geneva. Rumours have it that the membership of carouge is younger but from what I have seen I am not so sure. There is also a guy who organises hikes and advertises on glaocals but he has just joined the Swiss Alpine club because he wanted to do harder things.
So to Swis Alpine Club. When I first came to Geneva I just set off into the mountains on my own to explore. Joined CAS when I found they did ski touring and gradually got integrated so that I know lead hikes up to level of easy alpinism. The mininum age tends to be around 28-30 but often higher. you get round that by getting a friend to join. My daughter comes (aged 32) occasionally and has no problem. Language tends to be Frencvh although usually I have 40 % foreigners (ie neither Swis nor French). The advantage is you can oprogress from hiking to climbing. There a climbing sessions once a week althrough the year. Check out the programme on www.cas-geneve.ch. It includesd snow shoes, climbing, skitouring and ordinary hiking from dead easy to what should not really be classified as a hike
If you decide to organise things on your own there is a huge selection of books in english and french describing walks. Try one of the big Naville ofrPayot sections or Cactus sports in Carouge who are very patient
Paul Everett
President Geneve section of the Swiss Alpine but aged over 60)