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GR®11signposting (red and white)
(S/E) Park before the barrier on the Milly à Coquibus path (GR®11). Picnic tables are available.
Continue along the Milly à Coquibus path to the Coquibus farm.
(1) After the farm, turn right onto theGR®11heading north-east and follow the signs to the Aqueduc de la Vanne. Then turn left onto the aqueduct embankment.
(2) Turn right onto Chemin de la Roche-qui-tourne and follow it for 2 km.
(3) At the Carrefour du Petit Montrouget, turn right onto the Chemin de Coquibus, which is uphill, wide and gravelly.
(4) Then take a small path on the left that continues uphill.
From the ridge, the path is less well marked and a little overgrown in an area that burned a few years ago. Nevertheless, it offers beautiful views of the surrounding area. Be careful to stay on the ridge line.
Continue along this small path until you reach the wide Chemin de la Passée aux Moutons, which you take to the right towards the south.
End of the signposts
(5) Leave theGR®11and take the Chemin de la Vieille Grange on the right, which you follow straight ahead for 700 m.
(6) Take a path on the left.
(7) Turn onto the path on the left, then after a few dozen metres, turn right.
(8) You will come to the Chemin des Cent Marches, which you take westwards. Stay on this path until you reach the foot of the famous Cent Marches (100 steps), which are actually 113... and which you have to climb. There is a beautiful view from the top.
Then continue along the path that joins the Chemin du Nid d'Aigle
(9) After about a hundred metres, turn left as indicated on the sign. Leave the Coquibus farm on your right.
(10) 80 metres after the farm track, turn left onto the Chemin des Grands Longs Vaux until you reach the car park (S/E).
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Very difficult 
Easy 
