Tomorrow (Saturday) I need to take the Metro from Ecole Militaire to Gare du Nord for my 2:13 p.m. Eurostar train. I'd like to get to GduN between 1:15-1:30. Approximately how much time should I allow for the Metro journey?
If you use the Journey Planner as Steve suggests you will see that the direction for the Metro line 8 train you will take is listed as Creteil-Prefecture (Hotel de Ville). The direction signs in the Ecole Militaire station will say Creteil-Prefecture, not Hotel de Ville.
Thanks, guys!
Be sure to get there early, it's surprising the amount of different lines you have to wait in (customs, etc.)