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Grand Colombier

Plizio editorial teamUpdated: Jun 2026Data Sources

Mountain

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Grand Colombier is one of the highest peaks in the Jura Mountains, reaching an elevation of 1,534 meters in the Ain department of the Auvergne-Rhône-Alpes region. Dominating the Bugey area, the mountain gives one of France's most spectacular viewpoints, with clear days providing sights of Mont Blanc, Lake Bourget, and the Alpine ranges. The mountain is world-renowned among cycling enthusiasts, as its steep ramps, with gradients reaching up to 22%, are among the most challenging in Europe. It has served as a stage finish for the Tour de France multiple times, solidifying its status as a legendary climb. The summit area is defined by limestone formations and alpine meadows that boast a rich variety of flora in the spring. Geographically, Grand Colombier forms a striking barrier above the Rhône Valley. Access to the summit is possible via four different mountain roads, making it a unique destination for mountain sports. The ecological diversity of the massif is safeguarded by various conservation zones to protect rare plant and animal species.

Location: Auvergne-Rhône-Alpes, France
Top sights: Grand Colombier · Château des Sarrasins · Châtel-le-Haut
Nearby: Rumilly (12 km)

Best time to visit & climate

The most pleasant time to visit is Jun–Aug.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg °C	-1	0	4	8	12	17	19	18	14	10	4	0
Rain mm	98	73	90	75	111	100	93	99	76	92	96	106

📋 Practical info

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Getting there

Visitors typically reach Grand Colombier via scenic mountain roads acting as primary routes. Most begin their steep ascent from nearby alpine base towns.

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Best season

The best time to visit is strictly during the summer months when high passes are clear of snow. Weather changes fast, so clear mornings are good.

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Terrain & paths

The route features steep, continuous paved ascents with numerous sharp hairpin turns. The road is well-maintained, but the elevation gain is tough.

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What to bring

Tackling this requires a properly serviced vehicle or a geared road bike. All visitors need windproof clothing due to cold summit temperatures.

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Parking

Official parking near the summit is extremely limited and fills rapidly in peak season. It is common to park in lower towns and travel upwards.

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Safety

Extreme caution is vital on narrow, winding sections without guardrails. Sudden alpine storms and strong winds pose significant high-altitude risks.

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Time needed

A continuous scenic drive usually takes several hours without major stops. Cyclists should realistically allocate a full half-day for the ascent.

Geography

Coordinates

45.90310, 5.79580

Facts

The summit elevation of Grand Colombier is 1,534 meters.
Maximum gradients on the access roads reach 22%.
The mountain is accessible via four different pass routes.
It first featured as a Tour de France climb in 2012.
Mont Blanc is clearly visible from the summit on clear days.
The massif is primarily composed of Jurassic limestone.

Explore nearby

Notable places around

📍Rumilly12 km · EExplore →

📍Entrelacs17 km · SEExplore →

📍Belley18 km · SWExplore →

📍Sillingy19 km · EExplore →

Lake Bourget / Aix area20 km · SExplore →

📍La Balme-de-Sillingy20 km · EExplore →

📍Poisy21 km · EExplore →

📍Bellegarde-sur-Valserine23 km · NExplore →

Route planner — Car & Motorhome

Where do you start? We build the route here, with stops and country notes along the way.

Start Destination Via (optional)

Overnight stops

Vehicle

Only stops with (optional): 💧 Water ♻️ Disposal 🔌 Power 🚻 Toilets 🚿 Shower

Sights in the town Grand Colombier (6)

Grand Colombier 📍 landmark

A prominent mountain peak in the Jura Mountains offering a wide panorama.

Château des Sarrasins🌿 nature

A viewpoint located near the remains of an old fortress on Grand Colombier.

Châtel-le-Haut🏺 historical

Historical ruins of a medieval settlement or fortification on Grand Colombier.

Sous Charbemènes 🏺 historical

Ruins of an old site located near Charbemènes in the Colombier massif.

Ancienne gare d'Anglefort 🏺 historical

The remains of the former railway station of Anglefort at the foot of Grand Colombier.

Église Saint-Martin ⛪ religious

A church dedicated to Saint Martin in the Grand Colombier region.

Sights nearby

Frequently asked questions

Why is Grand Colombier famous among cyclists?

It is considered one of France's hardest climbs, with gradients up to 22%, and is often featured in the Tour de France.

What is the view from the summit?

You get a panoramic view of Lake Bourget, the Rhône river, and on clear days, as far as Mont Blanc.

What is the best way to reach the summit?

By car, there are four different pass roads leading up, all famous for their spectacular hairpins.

Is there a landmark on the mountain?

Yes, a massive iron cross structure marks the summit at an altitude of 1,531 meters.

Can you hike on Grand Colombier?

Yes, there are numerous trails, including sections of the GR9 long-distance path, with beautiful views of the Jura mountains.

Grand Colombier: where is it located?

Grand Colombier is located in Auvergne-Rhône-Alpes, France.

Grand Colombier: what is there to see?

Highlights include Grand Colombier, Château des Sarrasins, Châtel-le-Haut.

Grand Colombier: when is the best time to visit?

The most pleasant time to visit is Jun, Aug.

Grand Colombier: why is it worth visiting?

Grand Colombier is one of the highest peaks in the Jura Mountains, reaching an elevation of 1,534 meters in the Ain department of the Auvergne-Rhône-Alpes region.

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