4.3
(96)
1,400
riders
101
rides
Touring cycling around Port offers routes characterized by the serene waters of Lake Nantua, surrounded by rolling hills and forested landscapes. The region provides a mix of lakeside paths and routes that ascend into the surrounding terrain. Cyclists can expect varied elevations, with some trails offering views over the lake and valleys. The area's geography is defined by its central lake and the surrounding natural environment.
Last updated: October 14, 2026
4.1
(9)
66
riders
6.67km
00:29
70m
70m
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
7
riders
12.6km
00:46
80m
80m
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

5.0
(2)
28
riders
33.9km
02:00
150m
150m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.5
(2)
23
riders
60.1km
03:58
800m
800m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
16
riders
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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The Lac de Nantua is a superb body of water of 141 hectares. In the heart of the Jura, it offers an ideal setting for practicing a multitude of sports. It is even possible to swim in its waters.
2
0
pretty small stone viaduct with 2 superimposed lanes, one for cars with 6 arches and one for the train with 11 arches. Atypical.
0
0
pretty little stone viaduct with 2 superimposed lanes, one for cars with 6 arches and one for the train with 11 arches. Atypical.
0
0
A must-see in Ain! It’s a chance to experience some elevation gain!
0
0
Pretty little viaduct which is a real must-see!
0
0
A must-see on the banks of the Ain
0
0
Beautiful, simple, easy walk; lots of traffic noise on the "road" section, a bit of a shame, but the color of the water is magical
2
0
Beautiful view of the Ain Valley and this viaduct is magnificent. The lower part is suitable for cycling.
0
0
There are over 100 touring cycling routes around Port, offering a diverse range of experiences from easy lakeside loops to challenging climbs through forested hills. Nearly 1,500 touring cyclists have used komoot to explore the area.
Yes, Port offers 17 easy touring cycling routes, perfect for families or beginners. A great option is the Camping at Lake Nantua – Lac de Nantua loop from Port, an easy 4.1-mile (6.7 km) path that provides a pleasant ride directly from Port along the lake shore. Another easy route is the Lac de Nantua – Lac de Nantua loop from Le Chateau, covering 4.6 miles (7.4 km).
Touring cycling around Port is characterized by the serene waters of Lake Nantua, surrounded by rolling hills and forested landscapes. You'll find a mix of dedicated lakeside paths and routes that ascend into the surrounding terrain, offering varied elevations and views over the lake and valleys.
For experienced cyclists seeking a challenge, Port has 55 difficult routes. The Cize-Bolozon Viaduct – Lac de Nantua loop from Le Chateau is a demanding 37.3-mile (60.1 km) trail leading through varied terrain, often completed in about 4 hours. Another difficult option is the 29.5-mile (47.5 km) Lac de Nantua – Camping at Lake Nantua loop from Brion - Montréal-la-Cluse, featuring significant elevation changes.
Yes, many of the touring cycling routes around Port are loops, allowing you to start and end at the same point. For example, the popular Cycle path along Lake Nantua – Camping at Lake Nantua loop from Brion - Montréal-la-Cluse is a 23.7-mile (38.1 km) moderate loop offering extensive views of Lake Nantua.
The touring bike routes in Port vary significantly in length and duration. Easy routes like the Camping at Lake Nantua – Lac de Nantua loop from Port are around 4 miles (6.7 km) and take about 30 minutes. More challenging routes, such as the Cize-Bolozon Viaduct – Lac de Nantua loop from Le Chateau, can be over 37 miles (60 km) and take nearly 4 hours to complete.
The touring cycling routes in Port are highly rated by the komoot community, with an average score of 4.3 stars from over 90 reviews. Cyclists often praise the serene lakeside paths, the varied terrain, and the beautiful views over Lake Nantua and the surrounding forested hills.
Many routes offer views of Lake Nantua itself. For those who enjoy climbs, several mountain passes are accessible, such as Col de Bérentin and Cuvéry Pass. You might also encounter viewpoints like Jarbonnet Rocks, offering panoramic vistas.
Yes, the region includes routes that pass by notable structures. The Cize-Bolozon Viaduct – Lac de Nantua loop from Le Chateau is a prime example, incorporating the impressive Cize-Bolozon Viaduct into its varied terrain.
While specific seasonal data isn't provided, the presence of a lake and forested hills suggests that spring, summer, and early autumn would offer the most pleasant conditions for touring cycling, with milder temperatures and vibrant scenery. Winter cycling might be possible but could involve colder weather and potentially icy conditions on higher routes.
Yes, the region around Port features several mountain passes that can be incorporated into touring cycling routes. Notable passes include Col de Bérentin, Cuvéry Pass, Belleroche Pass, Col de Matafelon, and Col de Colliard pass, offering challenging ascents and rewarding views.


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