Transilien Paris – Montparnasse is one of the sectors in the Paris Transilien suburban rail network. The trains on this sector depart from Gare Montparnasse in the southwestern part of Paris. There are three lines in this sector (all designated "N"), leading to Rambouillet, Dreux and Mantes-la-Jolie. Transilien services from Paris – Montparnasse are part of the SNCF Montparnasse rail network.
This line according to SNCF will get from start to terminus in 1hr03mins, and operates as per this route: