Coming from Foix up Labastide of Serou (D117):

After the sign, turn left towards Nescus-Sentenac of Sérou. Passer Nescus and Estaniels (8km). Continue straight Esplas of Serou (4 km).
At one intersection, turn left, then leave the church on the right, follow road for 2 km. 
500m before Genat, leaving a small road left (Layos), continue going up, you'll pass between two houses.
A Genat, spend a hairpin right, "Les Terrasses de Genat" are in front of 2nd hairpin.

Coming from St Girons, go to Castelnau Durban (D117):

On the edge of Castelnau, just after the sign "Castelnau Durban take the small road towards" Rotate ". You pass over a bridge at the fork turn right You're on the road to the valley of the Artillac. From there, it's straight uphill for 10 miles.
You will walk along a river and then through a forest to reach a plateau. As they left the board, you will find the hamlet of Genat: Genat terraces at the entrance of Hamlet, the first house on your left side.