The average train between Gare Montparnasse and Grand Rex takes 18 min and the fastest train takes 15 min. The train runs at least 6 times per hour from Gare Montparnasse to Grand Rex. 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 10 minutes between Gare Montparnasse and Grand Rex. The earliest departure is at 1:50 AM at night, and the last departure from Gare Montparnasse is at 4:41 PM which arrives into Grand Rex at 4:57 PM. All services require a transfer at Invalides and take an average of 18 min. The schedules shown below are for the next available departures.

3h 43m • 1 change

18 min • 1 change

19 min • 1 change

16 min • 1 change
Want to know about travelling from Gare Montparnasse to Grand Rex? 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 Gare Montparnasse to Grand Rex. However, there are services departing from Gare Montparnasse station and arriving at Grand Rex station via Invalides. The journey, including transfers, takes approximately 18 min.
Gare Montparnasse to Grand Rex train services, operated by RATP Metro, depart from Montparnasse Bienvenue station.
Gare Montparnasse to Grand Rex train services, operated by RATP Metro, arrive at Bonne Nouvelle station.
The distance between Gare Montparnasse and Grand Rex is 3.8 km. The road distance is 5 km.
You can take a subway from Montparnasse Bienvenue to Grand Rex via Invalides and Bonne Nouvelle in around 15 min.