Lac Fourchu - Hike from La Grenonière

  • Pedestrian sports
  • Hiking itinerary

Before your visit

The moors, peat bogs and rocky environments of the Taillefer Massif have been awarded the Natura 2000 label. Remarkable for its biological richness, the site is home to 28 "habitats" of community interest, 5 of which are priorities for conservation.
The Taillefer massif: a remarkable, fragile... and protected site!
The Taillefer Natura 2000 site is an exceptional natural area, which nevertheless remains particularly fragile and vulnerable. As a result, specific regulations apply.
Swimming and camping prohibited
Bivouacs are forbidden except in designated bivouac areas, and only from 7pm to 9am.

Beautiful hike through different levels of vegetation leading to the Taillefer plateau and Lac Fourchu, also known as the Plateau des Lacs.

This hike will allow you to discover the magnificent Lac Fourchu, one of the must-do hikes in the Taillefer Massif. The trail passes through different vegetation zones before opening up to a spectacular alpine landscape, with beautiful panoramic views of the Taillefer Plateau and the surrounding peaks.

TECHNICAL INFORMATION
Starting point: Parking lot at the entrance to the village of La Grenonière
Elevation gain: 731 m
Duration: 3 hours 50 minutes (round trip)
Distance: 9 km
Difficulty: Moderate

MAP AND TRAIL GUIDE:
IGN Map: TOP 25 No. 333 EST OT – La Mure, Lacs de Laffrey
OBP Map: No. 1 (Oisans au Bout des Pieds): Trail 640

ITINERARY:
From the La Grenonière parking lot, the trail begins with a gentle ascent through a mixed forest of deciduous and coniferous trees, offering lovely views toward the Romanche Valley. The trail continues, gradually gaining elevation as it crosses alpine meadows where the mountain flora is rich and varied.

After reaching the Taillefer Plateau, the route opens up to a vast expanse dotted with lakes and ponds, including Lac Fourchu, surrounded by meadows and rock formations. The plateau’s untamed beauty and the breathtaking view of the surrounding ridges make it the perfect spot for a break or a picnic. The return trip follows the same trail, allowing you to appreciate the diversity of the landscapes once again.

HIGHLIGHTS ALONG THE ROUTE:
You may occasionally spot marmots, which are particularly fond of this area during the summer.
- Viewpoint overlooking the Oisans

Route details

Pets welcome

Parking nearby

Opening

From 15/06 to 15/10 daily.

Subject to favorable snow and weather conditions.

More details

Not accessible in a wheelchair

Go there

Latitude : 45.051864

Longitude : 5.974978

Height : 1250

Lieu-dit la Grenonière
38520 Ornon
Go there
Chambéry Grenoble Bourg-d'Oisans Bourgoin-Jallieu Vienne Lyon Valence Gap

Information updated on 27/10/2026
by Oisans Tourisme

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