Fort Gran Serin – Colle dell'Assietta loop from Frais

Routes

Hiking trails & Routes

Fort Gran Serin – Colle dell'Assietta loop from Frais

Hard

4.7

(28)

hikers

Fort Gran Serin – Colle dell'Assietta loop from Frais

06:17

17.3km

980m

Hiking

Hard hike. Very good fitness required. Mostly walkable paths. Sure-footedness required.

Last updated: September 2, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parco Naturale del Gran Bosco di Salbertrand

Waypoints

Start point

Get Directions

3.36 km

Alpe Arguel

Highlight • Mountain Hut

Alpine Farm near Oulx
Tucked away on the high slopes near the Strada dell’Assietta, this remote mountain farm is special. If the doors are open, step inside. The family produces …

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3.57 km

Alpeggio Arguel

Highlight • Mountain Hut

Alpine pasture specializing in the sale of milk and cheeses. Open only in the summer season

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7.25 km

Lago di Gran Serin

Highlight • Lake

The Gran Serin barracks can be seen in the background of the lake

Translated by Google •

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7.75 km

Gran Serin Fortifications

Highlight • Historical Site

The Gran Serin fortifications are part of the defensive complex of forts built to defend the valley by the French army.

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8.66 km

Fort Gran Serin

Highlight • Historical Site

Fort des Gran Serin is a former military fortress that was built at the end of the 19th century. The whole complex was more than 2.5 kilometers long and offered …

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10.1 km

Colle dell'Assietta

Highlight • Mountain Pass

The Assietta hill is an Alpine pass located at 2,472 meters above sea level, between the upper Susa valley and the Chisone valley. The hill is within the Orsiera Rocciavrè …

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17.3 km

End point

Way Types & Surfaces

Way Types

13.6 km

2.49 km

1.29 km

Surfaces

11.8 km

3.75 km

1.12 km

628 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Weather

Tuesday 3 November

-2°C

-5°C

92 %

Additional weather tips

It’s going to be cold. Wrap up warm and watch out for ice.

to get more detailed weather forecasts along your route

Comments

July 28, 2024,Punta del Gran Serin da Frais (Chiomonte)

Long but very easy route on a dirt road, therefore also feasible by MTB, to discover the nineteenth-century fort of Gran Serin, of which few remains remain.

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