This photo makes the terrain look flat, believe me when you let go the brakes you reached warp speed in no time ❗ 😆 Which was quite exiting bearing in mind we could`nt see more than 3-4 bike lengths in front of us and the ground was covered in marbles it seemed 😕
Trekster – do you mean the Rochers de Naye? That goes from Montreux which is a fair way down the lake from Geneva..
There is a cablecar outside Geneva that goes up the Salève and there are meant to be trails at the top and back down. Salève
If you have a car then just north of Lausanne there’s an activity centre called Chalet a Gobet with a dedicated MTB route. It’s a 10km loop with two optional 5km additions.