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Hiking trails & Routes

Auvergne Rhône Alpes

Saint-Jean-De-Couz

Old Saint-Martin Bridge – The Sarde Road loop from Saint-Jean-de-Couz

Hiking trails & Routes

Auvergne Rhône Alpes

Saint-Jean-De-Couz

Old Saint-Martin Bridge – The Sarde Road loop from Saint-Jean-de-Couz

Hard

4.3

(4)

20

hikers

Old Saint-Martin Bridge – The Sarde Road loop from Saint-Jean-de-Couz

03:24

10.2km

290m

Hiking

Hard hike. Good fitness required. Sure-footedness, sturdy shoes and alpine experience required. The starting point of the route is accessible with public transport.

Last updated: August 14, 2026

Tips

Includes a segment that may be dangerous

A part of this route comprises technical, difficult, or hazardous terrain. Specialist equipment and prior experience may be required.

After 5.62 km for 297 m

Waypoints

A

Start point

Bus stop

1

3.56 km

View of Saint-Christophe-sur-Guiers

Highlight • Viewpoint

Beautiful viewpoint with a wide view

Translated by Google •

Tip by

2

4.03 km

Old Saint-Martin Bridge

Highlight • Bridge

Splendid gorges of Guiers Vif, to explore if you pass in the area! You can cross them thanks to a very nice little bridge. Nice discovery!

Translated by Google •

Tip by

3

4.18 km

Parking for Hike to Pont Saint-Martin and Grotte Saint-Christophe

Highlight • Parking

small car park ideal for starting the hike to the st.martin bridge and the St Christophe cave

Translated by Google •

Tip by

4

5.09 km

Grottes de Saint Christophe Caves

Highlight • Other

Unfortunately, at the time of my visit there was no guided tour and therefore no entry into the caves... The walk is still worthwhile

Translated by Google •

Tip by

5

5.29 km

The Sarde Road

Highlight • Trail

Superb road and vestige of the Roman road which linked Lyon to Chambéry. Today a hiking trail, this ancient Roman road can be rediscovered on foot in a sumptuous setting!

Translated by Google •

Tip by

6

5.39 km

Grotte de Saint-Christophe

Highlight • Cave

Walking through the gorge is worth a visit... Unfortunately, we were there again at the wrong time for a guided tour of the cave

Translated by Google •

Tip by

7

5.40 km

Grotte Supérieure des Échelles

Highlight • Gorge

There is still a second cave, and the tour is well guided

Translated by Google •

Tip by

8

6.80 km

Gerbaix lookout

Highlight • Other

A breathtaking view of the massif! The rocks are impressive and the setting is beautiful.

Translated by Google •

Tip by

B

10.2 km

End point

Bus stop

Way Types & Surfaces

Way Types

4.98 km

1.90 km

1.85 km

1.10 km

289 m

< 100 m

Surfaces

4.89 km

1.89 km

1.82 km

828 m

690 m

< 100 m

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Elevation

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

Highest point (610 m)

Lowest point (420 m)

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Weather

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Wednesday 14 October

24°C

8°C

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