From the N10 or the A11, take direction Chartres, then at the 1st roundabout, turn right towards Champhol - Saint Prest.
At the 2nd roundabout, straight ahead, still towards Saint-Prest until an intersection, opposite the supermarket, turn right, enter Saint Perst, cross the Eure river and just after, turn left (at the HQ nightclub) towards Lèves-Le Gorget.
Another 2 km, and the Mill is on your left, just before leaving the village of Saint-Prest.