Paris exit: Porte d'Orléans, follow the signs to Bordeaux-Nantes: Highway
On highway A10, north of Orléans, switch to A71 and follow the signs to Clermont-Ferrand.
Take the 2nd exit after crossing the Loire, in SALBRIS
After the toll, take county road D724 and follow the signs to Romorantin.
Bypass Paris via Paris-Est Marne-La Vallée.
Keep following the direction of BORDEAUX-NANTES-LYON.
Then follow the instructions above.