The average bus between Guyancourt and RER A - Torcy (RATP) takes 3h 45m and the fastest bus takes 3h 9m. There is a bus service every few hours from Guyancourt to RER A - Torcy (RATP). The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Buses run every 2 hours between Guyancourt and RER A - Torcy (RATP). The earliest departure is at 5:43 AM in the morning, and the last departure from Guyancourt is at 9:15 PM which arrives into RER A - Torcy (RATP) at 6:40 AM. All services require a transfer at Vélizy 2 and take an average of 3h 45m. The schedules shown below are for the next available departures.



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3h 14m • 3 changesWant to know about travelling from Guyancourt to RER A - Torcy (RATP)? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.
No, there is no direct bus from Guyancourt to RER A - Torcy (RATP). However, there are services departing from Vélizy 2 station and arriving at Gare de Torcy station via Gare de Bourg-la-Reine station and Créteil - L'Échat station. The journey, including transfers, takes approximately 3h 45m.
Guyancourt to RER A - Torcy (RATP) bus services, operated by Île-de-France Mobilités - Croix du Sud, depart from Vélizy 2 station.
Guyancourt to RER A - Torcy (RATP) bus services, operated by Marne et Seine - STRAV, arrive at Gare de Torcy station.
The distance between Guyancourt and RER A - Torcy (RATP) is 43.1 km. The road distance is 50 km.
You can take a bus from Dampierre to Gare de Torcy via Vélizy 2, Gare de Bourg-la-Reine, and Créteil - L'Échat in around 3h 29m.