IJCLab is located on the Université de Paris-Saclay Valley Campus (Orsay), approximately 25 kilometers southwest of Paris.
By public transport
Directions
The easiest way to reach the Orsay campus is to take the RER B line to Orsay-Ville station (direction St-Rémy-lès-Chevreuses)
- 35 minutes, direct from Châtelet - 2.55 € (single ticket with Navigo Easy)
- 45 mins, direct from Gare du Nord - 2.55 € (single ticket with Navigo Easy)
- Approximately 1 hour from CDG airport (Terminal 1 or 3) and 45 minutes from Orly airport (ORY) - 14€ (single ticket with Navigo Easy)
How to buy a ticket
To purchase tickets, a Navigo pass is required. The Navigo Easy card (the most standard pass) can be purchased for €2 at train stations, or free of charge via the Île-de-France Mobilités app. Please note that major stations and airports can be crowded, which may result in longer waiting times.
For more information, see:: https://www.iledefrance-mobilites.fr/en/titres-et-tarifs/supports/passe-navigo-easy
If you plan to use public transport extensively in the Paris region, the Navigo Week pass (zones 1-5) may be a cost-effective option. It includes unlimited travel within Paris, Orsay, and airport connections for €32.40, valid from Monday to Sunday.
For more information, see: https://www.iledefrance-mobilites.fr/en/titres-et-tarifs/detail/forfait-navigo-semaine
By road from Paris
To summarise :

Once in Orsay
Auditorium Joliot Curie : IJCLab - Building 100 - 15 Rue Georges Clémenceau 91405 Orsay Cedex, France
Auditorium Pierre Lehman : IJCLab - Building 200 - Rue Ampère, BP 34 91898 Orsay Cedex, France
Coordinates : 48° 41′ 57.20″ N, 002° 10′ 14.57″ E
For more information on how to reach IJCLab, please visit: https://www.ijclab.in2p3.fr/en/ijclab-en/practical-information/