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Start at Carrefour du Ru Guérin (car park), on the D12 road between Nangis and Carrefour des Huit Routes.
The route is signposted from start to finish. Signposting is sparse but generally clearly visible at major junctions. In the forest, junctions and some paths are signposted.
Green markings
(S/E) Take the wide grassy path that heads due west after the forest gate, which is immediately on the left at the car park entrance (marker on the right-hand post of the gate). N.B. Do not confuse this with the Route du Ru Guérin, which heads north-west at the far end of the car park (this will be the return route). At the Carrefour du Cerf, continue straight ahead.
(1) At the Carrefour du Danjou, cross a tarmac forest road and take the grassy path opposite that heads diagonally to the right (north-west). Ignore the vague tracks on either side and, at the Carrefour du Lièvre, continue straight on along the Route de la Borde to Châtillon.
(2) At the Carrefour du Grippon, take the second path on the right (the only one that is grassy). Walk north, ignoring all the side paths, and at the junction with the Route Forestière de la Mauperthuis, continue straight ahead.
(3) At the Carrefour des Trois Bornes, take the second path on the right, which starts just to the right of a small tree bearing plot number 101 (no signpost here). Head east-northeast and, at the first junction (Carrefour du Blaireau on the map), turn left. Ignore a marked path coming from the right and you will immediately reach a very shady T-junction.
Green and yellow markings
(4) Turn left onto a narrow dirt track. Ignore a path coming from the right (not shown on the map) and leave the forest. Then turn right and follow a path between the fields. Ignore a path branching off to the right and walk alongside a copse on your right.
(5) At the T-junction (yellow markings on a post on the ground), turn right (north-east). Note the Ferme d'Heurtebise on the right. Cross the small tarmac road leading there and continue straight ahead (ignore a yellow arrow indicating a left turn; twoPR® trails cross here). Walk along the edge of the field on your right.
(6) At the junction with Route de Villefermoy (tarmac), take a grassy path on the right that slopes down slightly (N.B. At this junction, you will see a Green Cross opposite on the left and, beyond that, an old green marker: the Green Cross is the one to follow). Then head uphill, keeping to the left of a hedge and then a wood.
(7) At the edge of the woodland, ignore the path on the left and continue straight on (east) between two hedges. At the T-junction, turn right onto a wide path (no marker here). After a few metres (pile of stones at the junction), take a narrower path on the left, follow a hedge on your left and enter a wood (damp section). On leaving the wood, continue between two hedges and ignore the clearings on either side leading to fields.
Green markings
(8) At the junction, follow a small road to the right. At the end of the tarmac (a place called Le Moulin), take the gravel track that goes round the buildings to the right. At a fork (double-trunked oak), take the path on the left (Chemin communal du Moulin).
(9) At the junction (private gate on the left, narrow view of the Étang de Villefermoy), take the path opposite into the dark undergrowth. Cross a stream and continue along the path surrounded by vegetation.
(10) At the T-junction (gate to the same private property on the left), follow the stony track to the right (east-southeast). Continue along this well-trodden path and ignore any vague offshoots to the sides.
Green + Yellow markings
(11) At the Carrefour du Daim, turn left onto a wide gravel track (Route de Valence on the map). Head due south and, at a clearly marked junction (Carrefour de la Biche on the map), continue straight ahead.
Green signposting
(12) At the Carrefour de la Meunière, take the second path on the left, the Route du Ru de Guérin, which is also a wide gravel track. Head south-east and, at the Carrefour du Chevreuil, continue straight on. Walk past a pond on your left (information sign) and continue in the same direction to the car park located beyond a forest gate (S/E).
Visorando member
Easy 
