4.5
(6)
42
riders
01:49
32.6km
630m
Road cycling
Cycle the moderate 20.2-mile Col de la Frétallaz loop on the Plateau des Bornes sud, featuring scenic views and the Caille Bridge.
Last updated: February 26, 2026
Waypoints
Start point
Parking
Get Directions
403 m
Highlight • Bridge
Translated by Google •
Tip by
7.54 km
Highlight • Viewpoint
Translated by Google •
Tip by
24.3 km
Highlight • Mountain Pass
Translated by Google •
Tip by
32.6 km
End point
Parking
Way Types & Surfaces
Way Types
27.8 km
2.40 km
1.77 km
638 m
Surfaces
30.7 km
1.67 km
244 m
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Elevation
Highest point (780 m)
Lowest point (460 m)
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Weather
Powered by Foreca
Friday 26 June
36°C
18°C
27 %
Additional weather tips
Max wind speed: 8.0 km/h
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This route was planned by komoot.
This specific komoot tour, which is a loop on the Plateau des Bornes Sud, is designed for race bikes and typically takes around 1 hour and 49 minutes to complete. It covers a distance of approximately 32.6 kilometers (20.3 miles).
This particular komoot tour is rated as moderate. While the broader Plateau des Bornes Sud region can offer more challenging, longer loops (up to 90 km with 1200m elevation gain), this specific route is a shorter, more accessible option with about 632 meters of elevation gain.
The route primarily follows peaceful lanes and roads, winding through cultivated fields and rural landscapes. You'll encounter varied terrain with fairly large hills and sustained climbs, but the elevation gain is well distributed. There may also be sections of shared cycle paths.
Yes, the route features several points of interest. You'll pass by the historic Caille Bridge, experience a Breathtaking view of the lake and mountains, and traverse the Frétallaz Pass. The area also offers good mountain views throughout.
The spring and autumn months are generally ideal for cycling this route. The weather is typically milder, and the scenery is beautiful. Summer can also be pleasant, but be prepared for potentially warmer temperatures, especially on climbs. Winter cycling is possible but may require specific gear and caution due to colder conditions and potential ice.
While specific parking details for this exact komoot starting point are not provided, the region around the Plateau des Bornes Sud and Col de la Frétallaz has various villages and towns where you can typically find public parking. Consider starting from a nearby village like La Roche-sur-Foron or Thorens-Glières, which are mentioned as points of interest in the broader area and likely offer parking facilities.
Given its 'moderate' difficulty rating and approximately 632 meters of elevation gain over 32.6 kilometers, this route is best suited for cyclists with some experience. While not extremely difficult, beginners might find the sustained climbs challenging. It's a good route for those looking to build endurance and practice hill work.
Yes, this route shares sections with several other official trails. Notably, it covers 47% of the Circuit du pont de la Caille and 39% of both the Tour de la Mandallaz and the Tour du Vuache. Smaller portions also overlap with the Plateau des Bornes Sud (17%) and the Véloroute du Sillon Alpin (2%), among others.
As this is a road cycling route primarily on public roads and shared paths, dogs are generally permitted, especially if kept on a leash and under control. However, always be mindful of local regulations and other road users. Ensure your dog is comfortable with cycling environments if you plan to bring them along.
No, there are no specific permits or entrance fees required to cycle this route. It utilizes public roads and paths in the region, making it freely accessible to cyclists.
While the route itself passes through peaceful, rural areas, the broader region of the Plateau des Bornes Sud includes charming villages and towns like La Roche-sur-Foron and Thorens-Glières. These locations offer amenities such as cafes, restaurants, and shops where you can refuel or take a break. It's advisable to carry sufficient water and snacks, especially between villages.
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