Old Saint-Martin Bridge – The Sarde Road loop from Saint-Christophe

Mountain biking trails

France

Auvergne Rhône Alpes

Grenoble

Saint-Christophe-Sur-Guiers

Old Saint-Martin Bridge – The Sarde Road loop from Saint-Christophe

Hard

riders

Old Saint-Martin Bridge – The Sarde Road loop from Saint-Christophe

03:18

27.7km

860m

Mountain biking

Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike. The starting point of the route is accessible with public transport.

Last updated: August 11, 2026

Tips

Includes very steep uphill segments

You may need to push your bike.

After 1.65 km for 627 m

After 7.67 km for 253 m

Waypoints

Start point

Bus stop

Get Directions

1.07 km

Roman Bridge and the Échaillon Gorges

Highlight • Other

1.11 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

2.38 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

2.49 km

Grotte Supérieure des Échelles

Highlight • Gorge

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

Translated by Google •

Tip by

2.72 km

Échelles Tunnel and St. Christophe la Grotte Guesthouse

Highlight • Structure

Be careful if komoot tells you 27% slope... it's actually just 5% (no GPS in the tunnel, komoot imagines that we go through the summit...)

Translated by Google •

Tip by

13.8 km

Couz Pass

Highlight • Mountain Pass

Unfortunately, the D1006 is heavily trafficked, but luckily mostly with a bike lane uphill. No major climbs, but it drags on.

Showing Translation

Tip by

14.0 km

Couz Pass

Highlight • Mountain Pass

Nice little pass on the busy D1006

Showing Translation

Tip by

21.9 km

Belvédère de l'Écolu

Viewpoint

24.3 km

Chapelle Béatrice de Savoie

Highlight • Religious Site

a pretty point of view where there is a small chapel looking towards the mountains.

Translated by Google •

Tip by

27.7 km

End point

Bus stop

Way Types & Surfaces

Way Types

9.93 km

8.97 km

5.78 km

1.31 km

887 m

619 m

219 m

Surfaces

10.8 km

6.66 km

4.84 km

2.32 km

2.21 km

908 m

Elevation

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

Highest point (990 m)

Lowest point (390 m)

Weather

Saturday 10 October

14°C

7°C

0 %

Additional weather tips

Max wind speed: 9.0 km/h

to get more detailed weather forecasts along your route

Comments

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Old Saint-Martin Bridge – The Sarde Road loop from Saint-Christophe

Roman Bridge and the Échaillon Gorges

Old Saint-Martin Bridge

The Sarde Road

Grotte Supérieure des Échelles

Échelles Tunnel and St. Christophe la Grotte Guesthouse

Couz Pass

Couz Pass

Chapelle Béatrice de Savoie

Nearby routes

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