We'll follow the meanders of the Oise River for about 19 kms between Pontoise and Conflans-Sainte-Honorine, up hills for some beautiful views, then back down to the riverbanks.

Our train leaves St. Lazare at 9:27 am. Its name is YOLA, direction Gare de Boissy l'Aillerie, and we'll meet up in front of the third train car from the rear. We get off at the Gare de Pontoise at 10:07. There are trains back to Paris, Gare St Lazare, from Conflans-Sainte-Honorine every 15 minutes and it takes 30 minutes. We should be back by about 5 pm.