From Lyon: A43 then A48 to the Veurey exit. Take the N532 and when you reach Sassenage, take the D531 towards Villard de Lans.
From Valence: Valence Sud exit towards Grenoble, A49 to the Veurey exit. Take the N532 and when you reach Sassenage, take the D531 towards Villard de Lans.
Private transport can be arranged from the stations to Villard de Lans.