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INSTN - Saclay

The INSTN is located approximately 25km from Paris, on the outskirts of the CEA centre at Saclay.
GPS coordinates (latitude-longitude): N 48°43.441’ - E 2°09.287’

The Saclay centre entrance is on the RD306 (in the direction of Saint Aubin / Gif- sur-Yvette / Chevreuse), on the right at a roundabout less than one kilometre from the "Christ de Saclay" roundabout. When entering the centre, take the first left before the security checkpoint to access the INSTN.

Download the access map

Security checks

Access to CEA centres hosting the INSTN is controlled. Furthermore, all persons (students, trainees, lecturers, visitors, etc.) visiting the INSTN must have a document justifying their presence (student card, training course announcement, meeting notification or invitation, etc.) as well as valid proof of identity (national ID card, passport).

Coming by car

From Paris - Porte de Saint Cloud

Take the Porte de Saint-Cloud and follow directions for “Bordeaux”.
Cross the Pont de Sèvres and follow the N118 in the direction of “Bordeaux”.
Exit at junction 8 “Toussus-le-Noble / Saclay / Saint-Quentin”.
At the "Christ de Saclay" roundabout, take the N306 in the direction of “Saint-Aubin / Gif-sur-Yvette / Chevreuse”.
Turn right at the next roundabout.

From Orly airport

Join the A106 in the direction of “Paris”.
Take to A86 to “Fresnes / Versailles”.
Exit at junction 30 “Bièvres / Le Petit Clamart / Igny / Clamart”.
Join the N118, in the direction of “Saclay”.
Exit at junction 8 “Toussus-le-Noble / Saclay / Saint-Quentin”.
At the "Christ de Saclay" roundabout, take the N306 in the direction of “Saint-Aubin / Gif-sur-Yvette / Chevreuse”.
Turn right at the next roundabout.

Public transport

Châtelet or Denfert-Rochereau to Saclay

At either Châtelet or Denfert-Rochereau RER metro stations, take the RER B to "Saint-Rémy-lès-Chevreuse" and get off at "Le Guichet" station (25-33 min travel time). Next, take the No. 9 bus and get off at the “CEA RN 306” bus-stop (17 min travel time), located on the N306 on a roundabout 200 metres from the INSTN.
View Bus line 9 timetable

Orly Ouest to Saclay

At Orly, take the Orly Val to the “Antony” RER B metro station. Change to the RER B line in the direction of “Saint-Rémy-lès-Chevreuse”. Get off at “Le Guichet” station and take the No. 9 bus as indicated above.

Massy-Palaiseau station to Saclay

At Massy-Palaiseau station (RER B or C), take bus No. 91-06 B or 91-06 C (Massy - Saint Quentin) which goes to the “Plateau de Saclay”). Get off at the “CEA RN 306” bus-stop (20 min travel time) on a roundabout 200 metres from the INSTN.

View Bus line No. 91-06 timetable
Map of Massy-Palaiseau station and the Atlantis bus station: download

Useful links

CEA staff buses

Some forty regular bus services provide transport for CEA staff to and from the various “Portes” on the edge of central Paris, as well as most local areas in the Paris suburbs.

Staff are dropped at the RD306 roundabout at 8.30am (Eastern entrance, 200 metres from the INSTN), or inside the CEA centre at the bus station where shuttles provide a link with the INSTN (5 min travel time). In the evening, these buses can only be used when courses finish at 4.30pm.

Timetables and routes for these bus services can be obtained from the teaching assistants or training organisers.