Hiking in Wallonia: the Cliffs of Sy

  • Circuit Gourmand 25 - Colonster - Vallée de l'Ourthe
  • Walking or hiking

This 7 km walk, starting from Sy's rocks, follows the Ourthe river all the way to the ruins of the Logne Castle. There will be opportunities to go for a swim at several points along the trail, perfect on a sunny day!

The Ardenne: nature and history combined

Just after Sy’s little church this varied walk takes you up a steep slope on a rocky path up to a panoramic point where you have a superb view of the Ourthe. Small paths lead you across the forest to Longe, and its imposing ruined château. You by-pass the mighty massif as the route takes you alongside the Ourthe for a short distance. A path goes directly to the entrance of the château. Further on, a wide stony road leads from the château to the ‘Palogne’ leisure centre. In winter, you can bathe there or hire a kayak and go down the river for several kilometres. At this point the route crosses the Ourthe and you go back to Sy following the course of the river. Once you get to Sy you can bathe and have something to eat.

Route/Points of Interest

  • From the car park (S), you first go under the railway line (red diamond signage) and at the chapel take the steeply rising path.
  • As the first section of the walk is not well waymarked, you must follow the white and red GR sign; a little higher up, the red diamonds are again in evidence.
  • Once on the higher ground, take the rocky path (there’s a belvedere/viewpoint with a bench).
  • A little later look out for a small track that leads to Sy à Vieuxville; follow it to the right for about 50 metres until the waymark (red diamond) leads you right through the forest (a metal panel indicates ‘Sentier des Crêtes’).
  • A little further on the path divides; the signage guides you to the right on the edge of a field.
  • Take care! Before a bend to the right that goes downhill you have to keep left for several metres up to a T-junction (blue panels ‘Sentier des Crêtes’). The signs (red diamond) lead to the right.
  • A few metres down, the route divides again. Here you must follow the signs downhill and on the right in the direction of Logne.
  • At the next junction again take a right following the red diamond and blue panel (‘Palogne/Sy’).
  • The route then descends in  a series of sharp bends. When you get to the bottom, the route opens out on to a small road which links with Palogne à Vieuxville. From there, the signage (red diamond) leads you in a straight direction towards Sy. 
  • If you wisely decide to lengthen your ramble, turn first to the left to cross the stream a little further on via a footbridge on the right.
  • Keep to the right of the rock wall (the panel indicates ‘Domaine de Palogne’) and carry on to a junction. Then follow the signs to the left (red rectangle) and bypass the château mountain to pick up a lovely trail along the river.
  • A path then climbs to the summit of the peak as far as the château de Longe visitor car park.
  • Cross the left side of the car park, pass in front of the information board, then descend to the right on an asphalt track which, after a few minutes, leads you to the footbridge across the stream.

For an alternative walk:

  • Climb to the left as high as a fence to follow a narrow path through the forest as far as the entrance to the château (1).
  • From there, a broad road leads you to a rock wall. Once there again follow the red diamond signs towards the left.
  • On the small track you go past an old villa to reach the Palogne leisure centre car park. Go around the car park and cross the Ourthe on the pedestrian bridge.
  • After the bridge follow a concrete pavement on your right which takes you to the departure point and some magnificent views over the cliffs of Sy (2).
  • Just before Sy, the route takes you under the railway line (attention: the signage there is hard to see) and leads you into Sy by the railway bridge, directly on your left.

Prepare your walk

Make sure you wear good hiking boots and comfortable walking shoes. A walking stick will also help for the way up.

Always take some snacks and water with you.

Author’s Tips

Allow at least two hours to visit the château de Logne and the museum 1km away: it’s worth the effort (www.chateau-logne.be) to go there later by car.

Feeding possibilities at Sy: the hotel/restaurant ‘Le Bonheur de Sy’, the hotel ‘A la ferme’ (terrace with a view of the Ourthe) or the restaurant of the station hotel.

In the downloadable brochure below, we have selected one of the best walks per province: natural gems, family friendly paths, memorable views along the way, trails sprinkled with history… One even will introduce you to the iconic abbey beers.

A walker's guide to Wallonia

If you were to draw a straight line on an atlas northward from the Massif Central in France to the North Pole, the only area of high ground the line crosses is the Ardennes, shared between Belgium, Luxembourg and Germany – but mainly belonging to Wallonia, the southern part of Belgium!

Information on the walk


Minimum distance6.6 Km
The information provided is an indication only. We advise you to inquire directly with the organisers of the event that interests you before you leave.