If you are flexible with your travel dates, always consider that you can buy extremely cheap train tickets if you avoid travelling in the weekends and if you choose to travel during the low season.
With such a long journey, you could take into account travelling by plane, which is not necessarily more expensive. Doing so, you will shorten the distances and you will be able to enjoy more time in Nantes.
What are the departure and arrival stations in Marseille and Nantes?
You can take the train to Nantes at Marseille Saint-Charles, which arrives at Nantes.
Travelling by train to Nantes from Marseille: how many daily connections are there?
If you desire to go to Nantes from Marseille by train, 3 daily connections are available. Please note that these routes are all indirect lines. Thus, you will never have to change trains.
How long will it take you from Marseille to Nantes by train and when do the trains leave?
On average, it takes 7 hours and 7 minutes to get to Nantes by train, but you will need 6 hours and 9 minutes with the fastest trains. The first one is available at 06:10, whereas the last one leaves Marseille at 12:10.