RDV at 8:45 a.m. Gare Montparnasse, direction Versailles chantiers, RER N
Departure 9h 08, arrival Chaville rive gauche 9h 42
Return to Chaville rive gauche station, from 4:19 pm (then every 15 minutes), arriving at Montparnasse at 4:37 pm.
About 20 km -Forêt de Meudon – North and West part
Average difficulty and pace .
