Les 3 Sommets can host a mountain seminar, a leadership retreat, a company meal or a wedding weekend, with two meeting rooms, a restaurant and a residence that sleeps up to 54 people. The site stands on the Route du Charmant Som at Col de Porte, in the commune of Sarcenas, in the Chartreuse massif, 20 minutes from Grenoble.
Seminars and company events
The venue sells seminars, working days and company meals, and builds a tailored proposal from the client's brief and budget. It offers two meeting rooms: one large room and one smaller lounge laid out for a management committee. Meals, accommodation, a wellness area and outdoor or team-building activities can be added to the program.
Groups can walk straight out of the residence into the mid-mountain trails, at a level that suits every participant, and the venue can arrange professional outdoor guides. In summer and winter, the Chartreuse massif also offers group visits, such as the Chartreuse cellars with a tasting or a walk near the Grande Chartreuse monastery. A dedicated contact handles seminars, groups and private hire.
Weddings and receptions
Les 3 Sommets sells weddings with exclusive use of the site for a few hours, a full day or a whole weekend. The wedding offer includes a reception room with a sound system and party lighting, a fully equipped restaurant room with a fireplace and terrace, and outdoor areas facing the Charmant Som for a drinks reception at sunset. The team helps coordinate each stage, from the first visit to the day itself. Family gatherings, birthdays and sports groups are also welcome all year, subject to availability. The maximum number of wedding guests is not published.
Rooms and capacities
The venue lists two meeting rooms, a large one and a committee lounge, plus a reception room and the restaurant room. Seat counts for these rooms are not published, so ask for the layout that matches your group. The restaurant also has a terrace with a view of the mountains.
Accommodation
The residence has eight apartments that can connect to one another and be split into single or twin bedrooms. Apartments sleep 4 to 6, 6 to 8, or 8 to 10 people, from 50 to 80 square meters, some with balconies or a terrace. The site gives a total of up to 54 beds for private hire, and 36 to 40 for seminar groups; extra lodging nearby can be added for a wedding. The recently renovated residence has a wellness area with an outdoor hot tub, a sauna and a shower, and a pétanque court.
Catering
The restaurant is run by its head chef, who prepares homemade dishes from fresh, seasonal and local produce. For a seminar, she designs menus to match the brief, from full breakfasts with pastries to afternoon breaks with homemade cakes and lemonade. The menu includes Chartreuse specialties such as cheese fondue, tartiflette and Royans ravioli, as well as vegetarian dishes. For weddings, menus range from mountain cooking to more formal dinners.
History and setting
Col de Porte is a small mountain station at the foot of the Charmant Som, Chamechaude and La Pinéa peaks, surrounded by fir forests. The site offers silence, open views and direct access to hiking and, in winter, the activities of the station. It gives a team a real change of scene while staying close to Grenoble.
Getting there
Les 3 Sommets is 20 minutes from Grenoble, one hour from Chambéry, 1 hour 15 minutes from Lyon-Saint Exupéry airport and about four hours from Paris. The address is Route du Charmant Som, Le Col de Porte, 38700 Sarcenas. The nearest main-line rail station is Grenoble, from which groups usually continue by road.




