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France
Auvergne Rhône Alpes
Grenoble
Saint-Pierre-De-Chartreuse

Charmant Som Loop

Hard

8

runners

Charmant Som Loop

00:29

2.51km

160m

Running

This difficult 1.6-mile (2.5 km) jogging loop to the Charmant Som summit offers panoramic views in Chartreuse Regional Natural Park.

Last updated: February 26, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Parc naturel régional de Chartreuse

Waypoints

A

Start point

Parking

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1

1.32 km

Charmant Som summit

Highlight • Summit

Culminating at 1,867 meters, the Charmant Som is an emblematic summit of the Chartreuse massif. From the inn of the same name, accessible by car, the ascent is made without major difficulty. At the top, the panorama is spectacular!

Translated by Google •

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2.51 km

End point

Parking

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Way Types & Surfaces

Way Types

2.38 km

109 m

< 100 m

Surfaces

2.38 km

109 m

< 100 m

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Elevation

Elevation

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Weather

Powered by Foreca

Wednesday 1 July

23°C

11°C

0 %

Additional weather tips

Max wind speed: 13.0 km/h

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Frequently Asked Questions

Is this running route suitable for beginners?

This specific komoot route for Le Charmant Som is rated as difficult, even though it's a shorter loop of about 2.5 km with 158 meters of elevation gain. The difficulty likely comes from steep sections and varied terrain, including stony paths and grassy slopes. While experienced runners might find it a quick, challenging jog, beginners might find the ascents and technical sections demanding.

What kind of views can I expect on this running route?

The route offers exceptional scenery characteristic of the Chartreuse Massif. You'll be immersed in lush forests during ascents, eventually leading to alpine pastures and ridges. The highlight is the Charmant Som summit, which provides magnificent panoramic views of the surrounding peaks and valleys, including a 360° view. On clear days, you might even catch a glimpse of the Mont Blanc massif in the distance.

Where can I park for the Le Charmant Som running loop?

While specific parking details for this exact trailhead are not provided, the general access point for Charmant Som is often from the Col de Porte or other nearby mountain passes in the Chartreuse Regional Natural Park. It's advisable to check local signage upon arrival, as parking can be limited, especially during peak seasons. Arriving early is often a good strategy to secure a spot.

What is the best time of year to run this loop?

The best time to run this loop is typically from late spring to early autumn (May to October). During these months, the weather is generally more stable, and the trails are clear of snow. Summer offers lush alpine pastures, while autumn provides beautiful foliage. Always check local weather conditions before heading out, as mountain weather can change rapidly.

Do I need any permits or pay an entrance fee to run in Chartreuse Regional Natural Park?

No, there are generally no specific permits or entrance fees required to access the trails within the Chartreuse Regional Natural Park. It is a protected area, so visitors are expected to respect the natural environment, stay on marked paths, and adhere to park regulations regarding litter, noise, and wildlife.

Is the Le Charmant Som running loop dog-friendly?

Yes, dogs are generally allowed on trails within the Chartreuse Regional Natural Park. However, they must be kept on a leash, especially in areas with livestock (like the alpine pastures where cheese is still produced) and to protect local wildlife. Always clean up after your dog.

What is the terrain like on this running route?

The terrain on this loop is varied. You can expect sections through lush forests, leading to alpine pastures and ridges. There are stony sections and grassy slopes, which contribute to its 'difficult' rating for jogging. Be prepared for ascents and descents that may require careful footing.

What wildlife might I encounter in Chartreuse Regional Natural Park?

As part of the Chartreuse Regional Natural Park, the area boasts rich and protected alpine flora and fauna. If you are quiet and observant, you might spot ibexes, chamois, or marmots. The park is also home to various bird species and other small mammals.

Does this trail intersect with other well-known paths?

Yes, this running route also passes through sections of the Tour de Chartreuse and the Traversée de la Chartreuse, which are longer, well-known trails in the region. This means you might encounter other hikers or runners following these larger routes.

Are there any amenities or places to get food near the trailhead?

The Charmant Som area is known for its alpine pasture where cheese is still produced and sold on-site. While there might not be extensive commercial amenities directly at the trailhead, you may find small refuges or farms offering local products. For more substantial options like cafes or restaurants, you would typically need to visit nearby villages or towns within the Chartreuse Regional Natural Park.

What should I bring for a run on Le Charmant Som?

Given the 'difficult' rating and varied terrain, it's recommended to bring appropriate trail running shoes with good grip. Essential items include water, snacks, a lightweight windbreaker or rain jacket (mountain weather can change quickly), sun protection (hat, sunscreen), and a charged phone for navigation and emergencies. Layers are always a good idea due to elevation changes.

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