The Savoyard Dolomites

An exceptional hike in the heart of the Vanoise, reserved for seasoned and fit hikers. It will take you past natural wonders all along the route, including the Col de Biol pass, the peaks of the Brèche Portetta and even the wreckage of an aeroplane that crashed several decades ago; but above all, it offers a breathtaking landscape, both up close and from a distance, throughout the entire hike.

Details

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  • Walking
    Activity: Walking
  • ↔
    Distance: 7.95 mi
  • ◔
    Duration according to the author: 8 hrs 
  • ▲
    Difficulty: Extremely difficult

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 5,817 ft
  • ↘
    Descent: - 5,814 ft

  • ▲
    Highest point: 9,281 ft
  • ▼
    Lowest point: 4,911 ft

Photos

Description of the walk

Access from Pralognan: at the entrance to the village, turn right towards Les Prioux; park in the car park on the left, after two hairpin bends, at the start of the track leading to the hamlet of La Chollière on the D124.

(S) From the car park, walk up the road for a few dozen metres until you find, on the right, the very well-marked and pleasant path through the woodland leading to the Col de Napremont. Climb steeply, traversing and zigzagging, until you reach a rocky ridge.

(1) Cross this ledge via a wooden staircase – its 175 steps will really give your thighs a workout. The climb then continues to the Col de Napremont, with the majestic, ever-present and magnificent Grande Casse accompanying you up this slope.

(2) From the pass, descend about a hundred metres to find the start of the path leading to the Col du Biol and the Brèche Portetta; you can see the switchbacks of this path opposite.

(3) Make sure you follow the path, which is less clearly marked through the vegetation, to the left. You’ll arrive below the Aiguille d’Août, with the Brèche Portetta to your left.

(4) From this point, there is no longer a clear path, so you have two options:

1) Choose whether to head directly for the Brèche Portetta (following the “Brèche Portetta and Col de Grande Pierre” route).

2) Continue the ascent beneath the Aiguille d’Août (aptly named), the option chosen on the map and in the description.
This narrower section becomes steeper and more slippery; climb up the left-hand side of the gully to reach grassy slopes with easier footholds. You’ll reach a scree slope.

(5) Climb straight up through this scree field, then turn left towards the Col du Biol and its distinctive pass. The col is easily reached via the grassy slopes on the left.

(6) From the pass, the descent of about 100 m is a little steep. You’ll rejoin the path coming from the Vallée des Avals and Courchevel.

(7) Then turn left onto the steep climb, marked with orange and then green dots, where the reward of the scenery fully justifies the effort required. A sign points to the Brèche Portetta on the left and the Col de Mey on the right.

(8) Without going all the way to the pass, do take a stroll amongst the boulders and peaks – it’s simply magnificent. The view of Mont Blanc through the breach is unexpected and fantastic.
Then head back down, stopping to see the very narrow exit from the Brèche Portetta, and return to the previous junction.

(7) Turn left onto the path leading to the memorial stone at the Passage de Plassa.

(9) The Rocher de Plassa is very close by and it would be a shame not to climb at least to the southern summit via the relatively easy ridge.

(10) From the summit, the view is stunning and offers a 360° panorama. Enjoy the view, then head back down to the memorial stone.

(9) Head left towards the Plan des Baux, accompanied by the whistles of the marmots, then on to the Col des Saulces Supérieur.

(11) This marks the start of the final descent. It first passes the junction with the path to the Col des Saulces inférieur.

(12) A sign warns of a difficult descent; this is certainly the case – the obvious path straight ahead is very slippery, and it’s easy to find yourself on the ground. The descent is rapid down to the Route des Prioux.

(13) Cross the road, then take the path beneath it towards Pralognan, which leads to the D124 and the car park (S/E).

Waypoints

  1. S/E : mi 0 - alt. 4,918 ft - Car park
  2. 1 : mi 1.28 - alt. 6,220 ft - The steps
  3. 2 : mi 1.8 - alt. 7,149 ft - The Col de Napremont
  4. 3 : mi 2.08 - alt. 6,850 ft - Junction with the path coming from Pralognan
  5. 4 : mi 2.53 - alt. 7,684 ft - To the left lies the route to the Brèche Portetta
  6. 5 : mi 2.72 - alt. 8,310 ft - The rocky chaos
  7. 6 : mi 2.83 - alt. 8,501 ft - The Col du Biol
  8. 7 : mi 3.08 - alt. 8,383 ft - Junction – Vallée des Avals Path
  9. 8 : mi 3.18 - alt. 8,671 ft - The scenery here is fantastic
  10. 9 : mi 4.04 - alt. 9,068 ft - The memorial
  11. 10 : mi 4.12 - alt. 9,281 ft - Rocher de Plassa
  12. 11 : mi 5.25 - alt. 8,054 ft - Col des Saulces (2,456 m)
  13. 12 : mi 5.66 - alt. 7,766 ft - Crossroads – Lower Col des Saulces
  14. 13 : mi 7.03 - alt. 5,210 ft - The Route des Prioux, near the Doron de Bozel (river) – a tributary of the Isère
  15. S/E : mi 7.95 - alt. 4,921 ft - Car park

Worth a visit

In this heatwave, and for the first time, I found myself out of water on the descent from the Col des Saulces (2 litres weren’t enough). Throughout the hike, there are some very interesting sights to see, such as bizarre calcite formations, breccias, peaks, wedged boulders, the ever-present gypsum on the descent, and, in terms of wildlife, ibex and marmots – and even, beyond the large yellow slab, the wreckage of an aeroplane. One regret, however, is not having gone all the way to the Col de Mey, as it might be possible to continue along the ridge on a route that joins my route before the Rocher de Plassa. Something to explore next time.

Reviews and comments

4.7 / 5
Based on 2 reviews

Reliability of the description
5 / 5
Ease of following the route
4 / 5
Route interest
5 / 5
danielfr40
danielfr40

Overall rating : 4.7 / 5

Date of your route : Sep 11, 2026
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

A brilliant hike with stunning views.
The climb up to the Aiguille d’Août is difficult.
Especially as, although I started climbing the couloir on the left, I then switched to the right – a bad idea.
The descent from the Col de Biol is also difficult.
I couldn’t find your route along the hillside, so I carried on down through the grass until I found the path leading back up – sometimes on my backside.
The rest of the route wasn’t difficult
Thanks for the track and the directions

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Jemzolo
Jemzolo

Overall rating : 4.7 / 5

Date of your route : Jul 01, 2026
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

Magnificent!

The climb is really tough after the Col de Napremont, and you need to be very careful on the descent – which isn’t straightforward – between 6 and 7. But then, finding myself alone amidst those truly impressive rocky peaks was a truly memorable moment...

I didn’t make it up to the Rocher de Plassa (a shame); a storm caught me out on the ascent, with fog, rain and clouds blocking all visibility. Large patches of snow covered the path, and I sometimes struggled to find my bearings (in situations like that, the app is really useful for keeping track of your route!)

The ‘extremely difficult’ rating is well deserved. For my first hike in the Vanoise, it was brutal, but it definitely left me wanting to come back when the weather’s kinder. A big THANK YOU to the author.

PS: Given the weather conditions, I didn’t meet or even catch sight of a single person all day, not even at the Col des Saulces. It’s been ages since that last happened to me!

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