Best mountain passes around Rendeux are found in the Belgian Ardennes, characterized by challenging and scenic elevated routes. The region features significant climbs, dense forests, and panoramic views over river valleys. These routes provide an experience akin to traditional mountain passes, with considerable elevation gains and rewarding vistas. The landscape includes undulating hills and the meandering Ourthe river, offering access to natural beauty and picturesque villages.
Last updated: June 28, 2026
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Very nice climb. Small, narrow and very peaceful road in a forest environment. Personally, I absolutely do not find this climb to be the most difficult in Belgium. The ascent is even very pleasant, the gradient is reasonable and constant.
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The Col du Rideux: a gem in Luxembourg's Aisne Valley and a favorite among climbing enthusiasts. The 2.6 km climb (avg. 6.2%, 160m elevation gain) winds through a dense forest and is actually divided into two sections. After the hairpin bend, it seems to be over, but then comes a challenging final half kilometer at 8%. The road surface isn't in the best condition, but the climb has charm. Fun fact: rumor has it that this was the first climb in Belgium to be designated a "Col"!
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small pass with parking, several walks start here.
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At the sign of the highest point there is a warning against ticks and Lime disease, Good thing. We were also lucky because a day later we could not have walked this walk because of the Hunters.
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small pass with parking to start your walk.
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At this small pass you can park and start several walks.
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The Rendeux area, part of the Belgian Ardennes, offers numerous challenging and scenic elevated routes for cycling and hiking. These routes are characterized by significant climbs, dense forests, and panoramic views over river valleys, providing an experience akin to traditional mountain passes with considerable elevation gains and rewarding vistas.
For cyclists, the region features challenging loops with substantial ascents. Examples include routes like the 'La Roche-en-Ardenne – La Roche-en-Ardenne loop from Waharday' with 720 meters of elevation gain, and the 'La Roche-en-Ardenne – La Roche-en-Ardenne loop from Petit-Halleux' with 750 meters of elevation gain. These often traverse mostly paved surfaces and require good to very good fitness.
Yes, one popular climb is Col du Rideux, which features a 2.6 km climb with an average 6.2% gradient and 160 meters of elevation gain. It's known for its challenging final half kilometer at 8% after a hairpin bend. Another notable spot is Col de Halleux, also known as Tier Boa, which has a slope of 2200 meters with an average gradient of 7.1%.
Rendeux offers mountain biking trails with considerable elevation changes, suitable for enthusiasts. For example, the 'Climb to Mierchamps – La-Roche-en-Ardenne loop from Racelle Route de Petit-Halleux' and the 'Scenic Forest Singletrack – Wide Trail in Bois d'Arlogne loop from Rendeux' offer significant elevation gains. These trails often require advanced riding skills and very good fitness, with some segments potentially necessitating pushing the bike. You can find more options on MTB Trails around Rendeux.
Yes, Dragon's Back is a mountain pass with a narrow, winding forest road over rocky points. This single track is highly recommended for expert trail runners, offering a rocky yet manageable terrain and a unique, enchanting setting.
A significant landmark in the region is Saint Thibault's Chapel. Reaching it involves a steep climb, but it rewards visitors with panoramic views and cultural interest. The chapel has even served as a film set, making the challenging ascent worthwhile.
Visitors appreciate the challenging climbs, the rewarding panoramic views over the wooded hills and river valleys, and the immersion in nature provided by the dense forests. The unique character of these routes, often described as 'mountain passes' due to their significant elevation gains, is also a major draw.
Yes, for example, at the top of Col du Rideux, there is a large, partially paved parking lot. This serves as a convenient starting point for hikes and other activities in the area.
The Ardennes landscape, with its dense forests and undulating hills, is beautiful year-round. However, spring and autumn offer particularly vibrant colors and pleasant temperatures for outdoor activities. Winter can also be scenic, but some trails might be more challenging due to weather conditions.
Yes, there are several running trails in the vicinity. You can explore routes like the 'View of the Hermitage – Saint Martin Church Marcourt loop from Rendeux' or the 'Robert Lenoir Arboretum loop from Marche-en-Famenne'. More options are available in the Running Trails around Rendeux guide.
Absolutely. The Rendeux area is popular for road cycling with routes that include significant climbs. Examples include the 'Climb Col de Rideux North – Cycle Bridge to Durbuy loop from Chéoux' and the 'Col de Halleux – Quiet route loop from Rendeux'. For more detailed routes, refer to the Road Cycling Routes around Rendeux guide.
While many routes feature significant climbs, platforms like Komoot offer a wide array of cycling and hiking routes with varying difficulty levels. This allows visitors to choose paths that match their fitness and desired challenge, including options that might be more suitable for families looking for less strenuous exploration.


See even more epic mountain passes by checking out these guides around Rendeux: