The starting point is the car park at the foot of the suspension bridge leading to Tosny.
(S/E) Follow the D313 for 400 metres towards Gaillon (with your back to Les Andelys).
(1) Just before the roundabout, turn left towards Le Hamel and stay on the old road that passes below the houses. Cross the roundabout and continue along Rue Jean Bequet until you reach the left-hand bend.
(2) Leave the tarmac road and take a path that winds between the meadows behind the properties. Turn left onto Rue Guillaume to return to the village centre. Cross the main road and, after a right/left turn, take a grassy path that climbs up into Val Simon. Follow the path until you reach the edge of the forest.
(3) The path briefly runs along the edge of a field and then enters the forest again. Keep to the right near the edge of the woods to find a path between the fields that leads to a tarmac road. Turn left onto the road. After about 100 metres, turn right onto Route de Cléry and immediately take a wide path on the left. After crossing a small wood, the path overlooks a small valley and offers a distant view of the hills bordering the Seine. You will arrive at the crossroads with Chemin de la Garenne.
(4) Turn right and then immediately left to continue along the edge of the forest. Continue north until you reach a wider path about a hundred metres before the access road to the Haye Gaillard farm on the right.
(5) Take a small forest path downhill to the left (leaving the wider path that leads to a traffic island completely on the left). Continue to a large hairpin bend to the left. At this bend, take a small path on the right that climbs slightly. Follow the tracks that widen towards the top of the forest.
(6) At a crossroads, continue slightly to the left downhill. Soon, a beautiful view of the Seine opens up on the left, then the imposing mass of the castle appears in front, below.
(7) Enjoy the ruins of Château Gaillard by following (or not) the suggested route. At the end, join the tarmac road via the path to the north-east of the castle. Go down the road a little to the left and, at the fork, take the wide path to the right.
At the foot of the motocross track, continue left to join the tarmac road. Take Rue du Maréchal Leclerc briefly on the right, staying on the same line, and turn left onto Rue de Marville. Cross Avenue de la République (D316) and continue opposite on Rue Raymond Phelip untilthe first crossroads.
(8) Pass in front of the Normandie-Niemen monument and continue along the Promenade des Prés (former railway line) alongside the river. The promenade leads to Rue Saint-Jacques.
(9) Turn left onto this street and, after about 100 metres, turn slightly right onto Rue Grande to cross the old town centre of Le Petit Andelys. At the Church of Saint-Sauveur, turn right onto Rue de la Tour to reach the banks of the Seine. Continue left along the Seine. Pass under the suspension bridge to reach the car park on the left (S/E).