4.5
(944)
10,644
hikers
22
hikes
Hiking around Saint-Julien-De-Raz offers diverse landscapes within the Isère department of southeastern France, situated on the foothills of the Chartreuse Massif. The terrain ranges in altitude from 480 meters to 1920 meters, featuring the Ratz anticline and Grand Ratz. Hikers can explore a variety of environments, including dense forests, open meadows, alpine pastures, and dramatic gorges like the Gorges du Bret and de Crossey. Panoramic views of the Moirans plain and surrounding mountains are accessible from various viewpoints.
Last updated: May 28, 2026
4.4
(20)
135
hikers
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.
4.9
(10)
29
hikers
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.

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4.3
(3)
15
hikers
7.18km
02:13
230m
230m
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.
5.0
(1)
22
hikers
6.15km
02:05
280m
280m
Moderate hike. Good fitness required. Mostly accessible paths. Sure-footedness required.
4.0
(1)
6
hikers
2.95km
01:00
140m
140m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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10 minutes from the car park, accessible to all, a refreshing shower in hot summers, and for the more daring, the possibility of extending with a more complex and challenging circuit full of great sensations....
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Beautiful view of the Infernet cirque after a steep climb
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The Gorges du Bret live up to their names. “Bret” is an old Dauphinois word which means “narrow passage between rocks”. Here you will progress following a single track in the middle of these large limestone stones on either side of the path.
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The hike ends with crossing the Gorges du Bret, an unsuspected and impressive place.
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Exceptional view and paragliding departure area.
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Small pass above Voreppe with two completely different climbs. From Voreppe (6.5%) or from Saint-Laurent-du-Pont (<2%)
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Panoramic view from La Chartreuse. worth approaching. It is very close to the small town Le Grand Ratz
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Uphill through a shady forest, ideal in warm weather.
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There are over 20 hiking trails in the Saint-Julien-De-Raz area, offering a range of experiences within the Chartreuse Regional Natural Park. These routes traverse diverse landscapes, from dense forests to alpine pastures.
Yes, Saint-Julien-De-Raz offers several easy trails. For instance, the Croix des Traverses loop from Saint-Julien-de-Ratz is an easy 4 km route with minimal elevation gain, perfect for a relaxed walk. The region also features low-altitude loops like Les Passières de Charminelle, which is a 10 km loop utilizing an old passage.
For experienced hikers, the region offers challenging routes with significant elevation. The Placette Pass – View of the Infernet Gorge loop from Saint-Julien-de-Raz is a difficult 14.3 km path providing extensive views and passing through the dramatic Infernet Gorge. Another adventurous option is the hike to the Lorzier rocks via the Charminelle ladders, which includes slightly dizzying passages and panoramic views.
Yes, many trails in Saint-Julien-De-Raz are circular. Popular options include the Le Grand Ratz viewpoint – Roche Brune Viewpoint loop from Saint-Julien-de-Raz, a moderate 8.9 km trail, and the Gorges du Bret loop from Saint-Julien-de-Raz, a scenic 7.2 km route. The Tour de Rochebrune is also a difficult circular route that circles the highest point of the Grand Ratz.
Hikers can explore diverse natural features such as the dramatic Gorges du Bret and Gorges de Crossey, the scenic Lac de Saint-Julien-de-Raz, and the impressive Grand Ratz anticline. You can also discover various mountain passes like Col de Porte (1326 m) or Charmette Pass, and peaks such as Chamechaude or La Grande Sure.
Absolutely. The region is known for its panoramic views. From locations like Rochebrune, you can enjoy expansive vistas of the Moirans plain, the surrounding Chartreuse and Vercors mountains, and the Isère valley. The hike to the Lorzier rocks also offers beautiful panoramic views from the top.
The trails in Saint-Julien-De-Raz are highly rated by the komoot community, with an average score of 4.5 stars from nearly 1,000 reviews. Hikers often praise the varied mountain terrain of the Chartreuse Massif, the dense woodlands, and the dramatic gorges, highlighting the diverse experiences available.
Many trails within the Chartreuse Regional Natural Park, which encompasses Saint-Julien-De-Raz, are generally dog-friendly. However, it's always recommended to check specific trail regulations, especially concerning protected areas or private lands, and to keep dogs on a leash to protect local wildlife and livestock.
The best time for hiking in Saint-Julien-De-Raz is typically from spring through autumn (May to October) when the weather is mild and trails are clear of snow. During these months, you can fully enjoy the varied vegetation, from meadows to dense forests, and the panoramic views. Winter hiking is possible but requires appropriate gear and awareness of snow conditions, especially at higher altitudes.
Yes, the region is home to several notable gorges. The Gorges du Bret loop from Saint-Julien-de-Raz is a popular trail that leads through the scenic Gorges du Bret. The Gorges de Crossey also offer dramatic natural formations for exploration, providing unique hiking experiences.
Parking is generally available at or near the starting points of many popular trails. For example, some routes may start from Voreppe or Saint-Julien-de-Raz itself. It's advisable to check the specific route details on komoot for information on designated parking areas at trailheads.
While Saint-Julien-De-Raz is accessible, public transport options directly to all trailheads might be limited. It's best to research local bus services connecting to nearby towns like Voreppe or Saint-Julien-de-Raz, and then plan your hike from there, potentially requiring a short walk or taxi to reach the exact starting point.


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