The average train between Cachan and La Défense takes 30 min and the fastest train takes 27 min. The train runs at least 5 times per hour from Cachan to La Défense. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.
Trains run every 15 minutes between Cachan and La Défense. The earliest departure is at 5:10 AM in the morning, and the last departure from Cachan is at 1:01 PM which arrives into La Défense at 1:28 PM. All services require a transfer, and take on average 30 min. The schedules shown below are for the next available departures.

30 min • 1 change

32 min • 1 change

29 min • 1 change

29 min • 1 change
Want to know about travelling from Cachan to La Défense? 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 train from Cachan to La Défense. However, there are services departing from Cachan station and arriving at La Défense station via Châtelet - Les Halles. The journey, including transfers, takes approximately 30 min.
Cachan to La Défense train services, operated by Réseau Express Régional (RER Paris), depart from Arcueil - Cachan station.
Cachan to La Défense train services, operated by Réseau Express Régional (RER Paris), arrive at La Défense station.
The distance between Cachan and La Défense is 12.8 km. The road distance is 17 km.
You can take a train from Arcueil - Cachan to La Défense via Châtelet - Les Halles in around 25 min.