La “vraie” route https://map.veloland.ch/?lang=fr&bgLayer=pk&season=summer&resolution=50&E=2520325&N=1134288&layers=VelolandEtappenRegional
https://www.routeyou.com/fr/route/view/5690282/itineraire-a-velo-de-course/geneve-nyon-par-la-50-rte-du-pied-du-jura
Trace GPX (approximative)