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France
Auvergne Rhône Alpes
Grenoble

Crolles

The best road cycling routes around Crolles

4.5

(802)

15,850

riders

168

rides

Road cycling routes around Crolles are situated in the Grésivaudan valley, nestled between the Chartreuse and Belledonne mountain ranges. The terrain is characterized by significant elevation changes, with roads ascending to mountain passes and traversing deep gorges. This region offers a diverse landscape for road cyclists, from valley floors to challenging alpine climbs. The proximity to the French Alps ensures a varied and demanding cycling environment.

Best road cycling routes around Crolles

  • The most popular road cycling route is Col…

Last updated: October 9, 2026

4.2

(13)

264

riders

#1.

Lovely road in the valley – Marcieu Pass loop from Brignoud

79.1km

04:18

1,500m

1,500m

Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

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Hard

Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.

Easy
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Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.

Hard

Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride.

Hard

4.4

(5)

144

riders

Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.

Hard
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Tips from the Community

Sarouely
August 8, 2026, Col de la Placette

The 2nd half of the North face has been redone recently, a beautiful and very smooth cycling path. Road quite busy (1 of the entrances to Chartreuse from Grenoble)

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beautiful route without traffic in the Isar valley

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Small pass, easy climb from the north, great descent to the south.

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1

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Junction to Porte or to Cucheron. Beautiful views.

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2

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Gorge of the Guiers Mort, great landscape.

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2

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Great landscape, easy climb, quite a lot of traffic.

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2

0

beautiful road through the vineyards with little traffic

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0

0

Hello, a very nice walk, beautiful viewpoints, a bit long but worth the detour

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Frequently Asked Questions

What is the general difficulty level of road cycling routes around Crolles?

The road cycling routes around Crolles offer a diverse range of challenges. While there are 23 easy routes, the majority are either moderate (91 routes) or difficult (64 routes), featuring significant elevation changes due to the proximity of the Chartreuse and Belledonne mountain ranges.

Are there road cycling routes suitable for beginners in Crolles?

Yes, Crolles offers 23 easy road cycling routes. These routes typically stick to the valley floor, providing a gentler introduction to road cycling in the region without the demanding climbs found in the mountain passes. For a moderate option that still offers scenic views without extreme elevation, consider the Touvet Castle – Lovely road in the valley loop from Brignoud.

What kind of elevation gain can I expect on road cycling routes in Crolles?

Road cycling in Crolles is characterized by significant elevation changes, especially on routes that ascend into the mountain ranges. For example, the Col de Porte (1326 m) – Granier Pass loop from Saint-Hilaire-du-Touvet involves nearly 2,900 meters of climbing over its 96.5 km distance. Even difficult routes like the Gorges du Guiers Mort – Col de Porte (1326 m) loop from Brignoud feature over 1,700 meters of ascent.

Are there any circular road cycling routes around Crolles?

Many of the road cycling routes around Crolles are designed as loops, allowing you to start and finish in the same location. Examples include the challenging Marcieu Pass (1,060 m) – Saint Hilaire du Touvet loop from Brignoud, which covers over 80 km, and the Col du Barrioz from Theys – Col des Ayes (944 m) loop from Brignoud.

What are some scenic viewpoints or natural attractions accessible by road bike near Crolles?

The region around Crolles offers numerous scenic viewpoints and natural attractions. You can cycle towards impressive mountain passes like Col de Porte (1326 m) or Col du Cucheron, which provide panoramic views. For a natural wonder, the Saint-Même Cirque Waterfalls are also a notable highlight in the area.

What historical landmarks can I explore while road cycling near Crolles?

While road cycling around Crolles, you can encounter several historical landmarks. The Fort of Saint-Eynard offers a glimpse into the region's past and provides strategic views. Additionally, routes like the Touvet Castle – Lovely road in the valley loop from Brignoud pass by notable structures, adding a cultural dimension to your ride.

What is the best time of year for road biking in Crolles?

The best time for road biking in Crolles is generally from late spring to early autumn (May to October). During these months, the weather is typically milder, and mountain passes are clear of snow, offering optimal conditions for tackling the region's challenging climbs and enjoying the scenic landscapes. Always check local weather forecasts before heading out.

Are there any specific challenges for road cycling in Crolles during winter?

Road cycling in Crolles during winter can be challenging due to snow and ice, especially on higher mountain passes. Many routes, particularly those ascending into the Chartreuse and Belledonne ranges, may become impassable or require specialized equipment. Lower valley roads might remain clear, but conditions can be unpredictable. It's advisable to check road conditions and weather forecasts carefully.

How many road cycling routes are available around Crolles?

There are over 170 road cycling routes available around Crolles, offering a wide variety of distances and difficulty levels. This extensive network ensures there's a suitable ride for almost every road cyclist, from leisurely valley rides to demanding alpine ascents.

What do other road cyclists enjoy most about road cycling in Crolles?

The road cycling experience in Crolles is highly rated by the komoot community, with an average score of 4.4 stars from over 700 reviews. Cyclists often praise the challenging climbs, the stunning mountain scenery of the Grésivaudan valley, and the diverse terrain that caters to various skill levels, from deep gorges to high mountain passes.

Are there options for advanced road cyclists looking for a challenge in Crolles?

Absolutely. Crolles is an excellent destination for advanced road cyclists, with 64 difficult routes featuring significant elevation gains and technical descents. Routes like the Col de Porte (1326 m) – Granier Pass loop from Saint-Hilaire-du-Touvet, with nearly 2,900 meters of climbing, offer a substantial challenge for experienced riders.

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