The line then runs along Pasteur Boulevard, where it makes a stop at Les Pavillons-sous-Bois before making its way north. After it reaches Gargan Station, which is located between Louis-Pasteur and Roy Boulevards, it travels up the former RN3 overpass, now known as Aristide-Briand Avenue, before returning to ground level again. The train then runs between Édouard-Vaillant and Maurice-Berteaux Boulevards. A bit further, the line stops at the Lycée Henri Sellier Station, then the old L'Abbaye Station before following an S-shaped route westward. It then stops at Freinville-Sevran Station, runs along the former RN370, which is now called Westinghouse Boulevard, before crossing the de l'Ourcq Canal. From this point on, the train heads directly westward. It makes a stop at Rougemont-Chanteloup Station then reaches the La Plaine à Hirson line near the bifurcation at Roissy and runs along it for a few hundred metres. The train completes its journey at Aulnay-sous-Bois Station on two dead-end tracks 7,900 metres from the line's starting point.