Coming from:
•	Paris, Porte de St-Cloud or Rouen: A13 motorway, at Triangle de Rocquencourt, take A12 motorway, towards St-Quentin-en-Yvelines Follow A86 Versailles Satory - Exit at St Quentin/Guyancourt turning Follow signs for Guyancourt "Centre Ville", then Amarys
•	Paris, Porte de Châtillon: Take N306 towards Clamart Follow A 86 motorway towards Versailles Take St Quentin/Guyancourt exit Follow signs for Guyancourt "Centre Ville", then Amarys
•	Orly / Créteil : Follow A 86 motorway towards Versailles Take St Quentin/Guyancourt exit Follow signs for Guyancourt "Centre Ville", then Amarys
•	Dreux: N12 towards St Quentin Take turning for St Quentin, follow signs for Guyancourt "Centre Ville", then Amarys
•	Chartres: N10 towards St Quentin Take turning for St Quentin, follow signs for Guyancourt "Centre Ville", then Amarys