On the D22: from Boëge, head for Col de Cou when you reach Habère-Poche. After 3km, take a right onto the road to Col des Moises and after 100m, turn right at the sign for "Foyer nordique des Moises".
From Thonon: 500m after Col de Cou, take a left at the sign for "Foyer nordique des Moises".