4.7
(327)
7,277
riders
135
rides
Road cycling around Attignat-Oncin, nestled within the Chartreuse Regional Natural Park, offers a diverse landscape characterized by significant elevation changes and varied terrain. The region features challenging mountain passes like the Col de l'Épine and Mont Grêle, alongside extensive forest domains and open meadows. Proximity to Lake Aiguebelette adds to the scenic diversity, providing routes that combine demanding climbs with picturesque lakeside sections.
Last updated: July 1, 2026
5.0
(5)
150
riders
73.2km
04:17
1,650m
1,650m
Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.
5.0
(3)
134
riders
Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.

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4.8
(5)
103
riders
53.7km
03:25
1,450m
1,450m
Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.
5.0
(1)
91
riders
Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.
5.0
(3)
57
riders
56.9km
03:08
1,080m
1,080m
Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.
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Here is the route for the ascent of the Col de la Crusille starting from Novalaise
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It's a must-see place with a magnificent view of Lake Bourget.
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A very quiet and pleasant road. On the Chambéry side, a good part is in the shade, the slope of the main road is rather constant around 7-8%. On the Novalaise side, the mineral aspect with the cliff is more present in the middle of the climb. This side is quite steep with kilometers at 8-9%. On each side, 1 belvedere offers a breathtaking view of Lake Aiguebelette (approx. 2 km from the summit) and on the other side of Chambéry, the Bauges, Belledonne, the Chartreuse (500 m from the summit). The summit is in the forest.
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Good refueling before climbing the relay!
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Here again, another view of Lac du Bourget and the mountains near and far.
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Leaving from Chambery, the beginning hurts a little, but the rest is quite good
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1
Road cycling in Attignat-Oncin, situated within the Chartreuse Regional Natural Park, is characterized by significant elevation changes and varied terrain. You'll encounter challenging mountain passes like the Col de l'Épine and Mont Grêle, alongside extensive forest domains and open meadows. The proximity to Lake Aiguebelette also offers scenic lakeside sections, providing a diverse mix of demanding climbs and picturesque routes.
While many routes in Attignat-Oncin feature challenging climbs, there are options for various ability levels. The region offers 13 easy and 66 moderate routes, which are generally more suitable for beginners or those looking for a less strenuous ride. These routes still allow you to enjoy the beautiful landscapes without the intense elevation gains of the more difficult passes.
For experienced road cyclists seeking a challenge, the ascents of Mont Grêle and the Col de l'Épine are particularly notable. The Col de l'Épine, for instance, features consistent gradients of around 7-8% on the Chambéry side and steeper sections of 8-9% on the Novalaise side. Routes like the Col de l'Épine viewpoint – Col du Chat loop offer significant elevation gains, making them ideal for those looking to test their limits.
The region is rich in natural beauty. You can enjoy panoramic views of Lake Aiguebelette, Lake Bourget, and the Bauges massif from passes like the Col de l'Épine. The area also features the dramatic landscapes of the Chartreuse Regional Natural Park. Specific highlights include the Épine Pass and the Mont Grêle Viewpoint, offering stunning vistas. You might also encounter natural wonders like the Waterfalls on the Nant du Pontet or the François I's Cave.
Given the mountainous terrain, the best time for road cycling in Attignat-Oncin is typically from late spring through early autumn (May to October). During these months, the weather is generally more stable, and mountain passes are clear of snow, offering optimal conditions for challenging climbs and scenic rides. Always check local weather forecasts before heading out.
Yes, many of the road cycling routes around Attignat-Oncin are designed as loops, allowing you to start and finish in the same location. Examples include the Col du Mont Tournier – Crusille Pass loop and the Lac d'Aiguebelette loop. These circular routes provide a convenient way to explore the diverse landscapes of the region.
The area is highly rated by the komoot community, with an average score of 4.6 stars from over 300 reviews. Road cyclists often praise the challenging mountain passes, the stunning panoramic views from various viewpoints, and the diverse terrain that combines demanding climbs with picturesque lakeside sections. The preserved natural environment of the Chartreuse Regional Natural Park is also a frequently mentioned highlight.
Absolutely. Attignat-Oncin's proximity to Lake Aiguebelette means several road cycling routes incorporate its scenic shores. The Lac d'Aiguebelette – Refill your bidon here! ☝ loop is a popular choice, offering a 33.4-mile (53.7 km) ride through the beautiful area around the lake, perfect for combining cycling with stunning water views.
The Col de l'Épine is renowned for its breathtaking views. As you ascend, you'll be treated to expansive vistas of Chambéry, the southern part of Lake Bourget, and the Bauges massif to the west. From the eastern slope, there's a superb panoramic view of Lake Aiguebelette. The Épine Pass itself is a significant highlight for cyclists.
While road cycling in Attignat-Oncin often involves significant climbs and can be challenging, there are 13 easy routes that might be more suitable for families or those cycling with children. These routes typically have less elevation gain and are shorter in distance. However, it's important to remember that road cycling, especially in mountainous regions, requires a certain level of fitness and road awareness. Always assess the route's difficulty and traffic conditions before setting out with children.
While specific parking areas are not detailed, you can typically find parking in the commune of Attignat-Oncin itself or in nearby towns like Lépin le Lac - La Bauche, which is a common starting point for many routes. Look for public parking lots, especially near tourist information centers or trailheads. Always ensure you park legally and safely.
Absolutely! Attignat-Oncin and its surroundings offer a wide array of outdoor activities. After a ride, you could explore the Grenand canyon, known for canyoning and hiking along its gorges and waterfalls. Lake Aiguebelette also provides opportunities for water sports like swimming, canoeing, and pedal boating. The Chartreuse Regional Natural Park is crisscrossed with hiking trails, including the GR9 long-distance footpath.


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