The itinerary lasts 14hrs 59min, and has 3 steps.
Nantes - Paris
The step from Nantes to Paris lasts 2hrs 07min. You'll travel in a high-speed train.
Paris - Bruxelles
The step from Paris to Bruxelles lasts 1hrs 22min. You'll travel in a high-speed train from the company Eurostar.
Bruxelles - Berlin
The step from Bruxelles to Berlin lasts 11hrs 30min. You'll travel in a night train.