This is the 2nd half of the video 'Mont Saleve to Challex'. Start in Charly, close to Mont Sion. First a long descent of a few %, then you cross the FR-CH border. A few km later you enter France again, you pass the bridge over the Rhone river, and you end with 5km gentle uphill slope, finishing in Challex.
See also my other videos: https://dashboard.kinomap.com/en/users/129864/playlists