Park in the car park at the town hall in Montigny-sur-Loing.
(S/E) With your back to the town hall, turn right onto Rue Raoul Jacobe. At the end, turn right and walk a few metres, cross Rue du Loing and immediately turn left to climb the stairs. At the top, turn right and climb the stairs again. Then turn left onto Rue des Champs Pérault and follow it to the end. Turn right onto Rue Orgiazzi (there is private property opposite), then take the first path on the left, Chemin des Brosses. At the bend, leave the path on the left (private), continue on the right along Chemin des Brosses and enter the forest.
(1) Turn right and follow a path to the north-east. At the T-junction (barrier opposite), follow Chemin du Tertre Blanc to the right for about 100 metres.
(2) Turn left onto a barely visible path that climbs up to the Table du Roi and a viewpoint.
(3) Turn right and descend (caution: path may be slippery in wet weather). At the bottom, turn left onto Chemin du Tertre Blanc. Cross Route de Larchant (caution: traffic) and take Rue du Croc Marin opposite. Go under the railway line and take the second street on the right, Rue Roger Genty. After about 50 metres, turn into the first street on the left.
(4) At the crossroads, turn left onto Rue Grande. Cross a street on the left and continue straight ahead.
(5) After No. 43, leave the street and take the path opposite, Sentier de Gravine, which curves to the left further on. At the end, turn right and, after 100 metres, right again onto Place Parodi. At the end, turn left and take the small tunnel under the D148 road.
(6) Cross the stream and, at the end of the bridge, first turn left then right to head east. At the T-junction, turn left. At the Plaine de Sorques car park, join the D104, cross it and take the path opposite that leads to the right of the buildings (Chemin de Montigny).
(7) At the crossroads with another path (Route du Bornage), turn right. Further on, rejoin the D104, cross it and continue straight ahead on the very straight path (still the Route du Bornage). Ignore a path on the left further on, then arrive at a T-junction. Turn left for about 30 metres.
(8) Leave Route du Bornage and turn right. The path then turns right and runs alongside the Loing on your left.
(9) After about 800 metres, you will come to a bird observatory on the right (incorrectly positioned on the 1:25,000 map). Retrace your steps.
(9) Continue along the path beside the Loing on your left.
(10) At the crossroads, go straight ahead and go around a small pond on the right.
(11) On the right, you will come to a second observatory, much larger than the first, with lots of information about the birds. Retrace your steps.
(11) Take the path on your right and turn left at the next intersection (the purple line on the 1:25,000 map is inaccurate). At the end, first turn right then left and take the small bridge you crossed on the way there.
(6) Cross the stream again via the small bridge. Turn left immediately. Do not take the tunnel, but walk past it and take the stairs on the right that lead up to the Pont de la Gravine. Turn left and cross the Loing. Shortly afterwards, take the path on the left that runs alongside the D148 (it is less dangerous). At the end, return to the road for about 150 metres.
(12) Cross the Route de Sorques and take the road opposite called "Domaine de la Vieille Écluse". Continue straight ahead and pass two small access roads to a horse riding centre on your left. Turn right at the T-junction (the main entrance to the horse riding centre is on the left).
(13) Turn left and continue almost straight ahead until you reach a campsite on your left, the Parc du Gué. Turn right onto Rue Cahen Michel. At the end, turn right and cross the Loing. At the end of the bridge, turn right.
(14) After No. 3, go up the stairs on the left. Follow the path and, at the end, turn left onto Rue du Point de Vue. At the end of this street, cross Rue du Loing and take Rue de l'Église opposite.
(15) Turn right at the second street, Rue du Tertre. Then turn right onto Rue des Corvées. Cross Ruelle des Cormiers. At the end, you will find the Montigny-sur-Loing Town Hall on your right (S/E).