⚠️ The date shown at the top of this event comes from the official source. The original description mentions other dates that may be outdated.
Line 18, which will eventually connect Orly to Versailles via the plateau de Saclay, will open its first stations in autumn 2026. Line 15 Sud, the first orbital line of the Grand Paris Express, will follow in spring 2027. A few months before these historic openings, the 7th Walking Tour invites you to explore these rapidly changing areas on foot.
We are the first passengers — but on foot — on these metro lines that will transform the cultural geography of Île-de-France. Free and open to everyone, the routes can be completed using a Navigo pass or entirely on foot. Welcome to the Grand Paris of new beginnings. Dates and registration Day 1 - A royal departure from Versailles to the new town of Saint-Quentin en Yvelines Friday, August 21, 2026 Meeting point: Versailles-Chantiers station car park (RER C, lines N and U) Line 18 - 19 km SOLD OUT Day 2: The secret Mérantaise valley and the plateau de Saclay Saturday, August 22, 2026 Meeting point: in front of Saint-Quentin-en-Yvelines station, RER C, lines N and U) Line 18 - 20km SOLD OUT Day 3: A day on the Plateau, between campuses and grain farms Sunday, August 23, 2026 Meeting point: Massy-Palaiseau station (RER B and C) Line 18 - 18km Register here (available from 08/17/2026) Day 4: From the Île-de-France Centre Pompidou to Orly airport, via Montjean Monday, August 24, 2026 Meeting point: Massy-Palaiseau station (RER B and C) Line 18 - 17km SOLD OUT Day 5: From Île Seguin to Cité universitaire de Paris, via line 15 Tuesday, August 25, 2026 Meeting point: Pont de Sèvres metro station (line 9) Line 15 Sud - 16km SOLD OUT Day 6: The resurrected Bièvre, from Arcueil to the most beautiful station in the world Wednesday, August 26, 2026 Meeting point: Châtillon-Montrouge metro station (line 13) Line 15 Sud - 15km SOLD OUT Day 7: From Villejuif to the BNF: entering Paris via line 14 Thursday, August 27, 2026 Meeting point: Villejuif-Gustave Roussy metro station (line 14) Line 15 Sud - 17km SOLD OUT Day 8: From Vitry to Saint-Maur, via the lake and islands of Créteil Friday, August 28, 2026 Meeting point: in front of Les Ardoines station in Vitry-sur-Seine (RER C) Line 15 Sud - 18km Register here Day 9: From Saint-Maur to Noisy-le-Grand, riverside cafés and living memories Saturday, August 29, 2026 Meeting point: Saint-Maur–Créteil station (RER A) Line 15 Sud - 18km Register here (Available from 08/23/2026). Day 10: Grand finale from Saint-Maur to Chelles via the plateaus Sunday, August 30, 2025 Meeting point: In front of Champigny station (RER A) Line 15 Sud - 20km SOLD OUT
Source: paris.fr — photo: ©Val-de-Marne tourisme et loisirs