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The loop of the passes
The loop of the passes
The loop of the passes

The loop of the passes

This loop between Oisans and Savoy will take you over the Col du Glandon and the Col de la Croix de Fer. Cyclists who tackle these legendary passes exchange greetings. They share the same sense of achievement: it’s tough, it’s long, but it’s so beautiful!

Itinerary no. 15 of the “Cycling in Oisans” guide (Oisans Tourisme)

Departure / Arrival (loop): Bourg d’Oisans 720 m
Time: 7 h 30
Distance: 150 km
Highest point: 2071 m
Lowest point: 463 m
Total ascent: 4066 m
Max. gradient: 13%

Map: Michelin Local Map no. 333 Isère, Savoie

From Bourg d’Oisans follow the D1091 towards Grenoble.
In Rochetaillée continue towards “Allemont / Col du Glandon - Col de la Croix de Fer”.
On leaving Allemont, climb up 2 hairpin bends to get to the top of the Verney dam. At the end of the dam, the route towards “Col du Glandon - Col de la Croix de Fer” will be signposted, taking you alongside the Lake Verney.
At the end of the lake, you will start a steep climb up to Rivier d'Allemont.
At Rivier, you can take a little breather before dropping down to the bottom of the valley and then attacking a new strenuous climb up to the Lake Grand Maison.
Once arrived at the lake, the steep-sided valley gives way to beautiful alpine pastures. The ride will be more easy-going from here to the Col de Glandon (1924 m).
Once over the pass, continue along the D927 to Saint-Étienne-de-Cuines. Once you reached the village centre, fork to the D74 towards Sainte-Marie-de-Cuines. Pass under the motorway and take a right turn onto D1006 towards Saint-Jean-de-Maurienne. At the first roundabout, follow the D906 with the signposting “Saint Jean de Maurienne / Col de la Croix de Fer”. Cross Saint-Jean-de-Maurienne in the direction of “Vallée de l'Arvan”. To reach Albiez-le-Jeune, follow the signposts to “Torino / St-Michel-de-Maurienne”, then, once in an industrial estate, you will find the direction “Albiez-le-Jeune” (D81).
Climb the D80 up to Albiez-le-Jeune, go past Albiez-le-Vieux and the Col du Mollard (1638 m) up to the road D926 that you will follow as far as the Col de la Croix de Fer.
When you reach the Col de la Croix de Fer (2067 m), you are at the highest point of your route. All you have to do now is let yourself wheel it down to Bourg d'Oisans following the route to “Col du Glandon” and then “Allemont”. You will find yourself back on the route you took on the way out.

From Saint Jean de Maurienne keep going towards “Centre ville / Vallée de l'Arvan”. At the roundabout decorated with a giant Opinel knife, follow the D926 towards “col de la Croix de Fer”. This route is 10 kilometres shorter than the D80 leading up to the Col du Mollard. However, due to the tunnels and frequent road works, it may be more tiresome.
Distance: 15 km
Time: 2 h
Total ascent: 922 m

149 km
7 h 30 mn
max. 2066 m
min. 460 m
4066 m
4066 m

Altimetric profile


Styles : MountainCompetition
Public : SportsmenCyclists

Starting point

Mas du Plan
38520 Le Bourg-d'Oisans
Lat : 45.0544Lng : 6.03202
0 m
130 d
image du poi

Bourg d'Oisans

From Bourg d’Oisans follow the RD1091 towards Grenoble. When you get to Rochetaillée, follow the D526 to Allemont.

Rue du 19 Mars 1962 38520 Le bourg-d'oisans
Lat : 45.0544Lng : 6.03202
0 m
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/ 126 d / 0 m

Village d'Allemont

The history of Allemont has been marked by the mining industry and...Read more

38114 Allemond
Lat : 45.1322Lng : 6.04061
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/ 126 d / 0 m

Barrage de Grand'Maison

38114 Vaujany
Lat : 45.2074Lng : 6.12444
0 m
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image du poi


Prendre direction "Allemont / Col du Glandon / Col de la Croix de Fer"

D526 38520 Le bourg-d'oisans
Lat : 45.1143Lng : 6.0057
0 m
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/ 126 d / 0 m

La voie de Rochetaillée

Rochetaillée lierally means "cut rock" in French and looking up at...Read more

38520 Le Bourg-d'Oisans
Lat : 45.1141Lng : 6.00483
0 m
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From Allemont, ride along the dam and cycle towards Le Rivier d’Allemont - Grand Maison.

345-354 D526 38114 Allemond
Lat : 45.1284Lng : 6.04491
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Le Rivier d'Allemont

From Le Rivier four hairpin bends will take you back down to the stream of l’Eau d’Olle. From its banks you will have a regular but strenuous climb up to the Grand Maison barrage.

800 Route des Cols 38114 Allemond
Lat : 45.2095Lng : 6.04647
0 m
image du poi

Barrage de Grand' Maison

Once near the dam slope softens, you will find your rhythm all the way up to the pass.

D526 38114 Vaujany
Lat : 45.2144Lng : 6.1311
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Towards Col du Glandon

Turn left onto the D927 to reach the Col du Glandon. Then join St-Colomban-des-Villards.

D927 73130 Saint-colomban-des-villards
Lat : 45.2396Lng : 6.17554
0 m
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From Sainte-Marie-de-Cuines join Saint Jean de Maurienne by D74.

1-49 Route de la Combe 73130 Sainte-marie-de-cuines
Lat : 45.3423Lng : 6.29131
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Saint Jean de Maurienne

Then follow the D80 towards the Col du Mollard - Saint Sorlin. You go through Albiez-le-Jeune.

274 Rue de la Libération 73300 Saint-jean-de-maurienne
Lat : 45.2795Lng : 6.34561
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Direction Albiez-le-Jeune

Pour aller sur Albiez-le-jeune suivre les indications "Torino / St-Michel-de-Maurienne"

422 Rue de la République 73300 Saint-jean-de-maurienne
Lat : 45.2746Lng : 6.34763
0 m
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Direction Albiez-le-Jeune

Suivre la direction "Albiez-le-Jeune" par la D81 puis la D80

D906 73300 Saint-jean-de-maurienne
Lat : 45.2681Lng : 6.36917
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Still on the D80 cycle through Albiez-le-Vieux, cycling near the col du Mollard and join the D926.

D80 73300 Albiez-le-jeune
Lat : 45.245Lng : 6.35104
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Turn left on D926

Join Saint-Sorlin-d'Arves.

21 D926 73530 Albiez-montrond
Lat : 45.1969Lng : 6.30115
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Col de la Croix de Fer

Cycle down on the same road to reach Bourg d'Oisans.

D926 73530 Saint-sorlin-d'arves
Lat : 45.2275Lng : 6.20333
0 m

4 informations complémentaires


Phone : 04 76 80 03 25

Email :

Website :

Open period

From 05/01 to 10/31 : open daily.
Learn about the opening date of paths.

Updated by

Oisans Tourisme - 06/03/2019

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