Gorges du Nan – Izeron bridge loop from Saint-Gervais

Bike touring routes & trails

Gorges du Nan – Izeron bridge loop from Saint-Gervais

Hard

4.7

(7)

riders

Gorges du Nan – Izeron bridge loop from Saint-Gervais

04:00

52.4km

1,320m

Cycling

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: August 5, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parc naturel régional du Vercors

Waypoints

Start point

Bus stop

Get Directions

1.50 km

Bridge over the Isère

Highlight • Bridge

It is a reinforced concrete "Bow-string" bridge.

Designed by the Parisian engineering firm Pelnard-Considère, its construction took place between 1950 and 1952 to replace a previous structure, relying on nearly 150 foundation piles for each abutment.

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11.1 km

Gorges du Nan

Highlight (Segment) • Natural Monument

Connecting Cognin-les-Gorges to Malleval-en-Vercors, in the Vercors massif, the Nan Gorges are a canyon through which the Nan River flows.

A cantilevered road clinging to the rock face, it features three tunnels spread over 200 meters and requires no lighting.

Translated by Google •

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23.5 km

Smooth Paved Road in Parc Naturel Régional du Vercors

Highlight • Cycleway

38.4 km

Izeron bridge

Highlight • Other

49.8 km

View of Rovon

Highlight • Other

What to say, the photo shows the spectacular and grandiose side

Translated by Google •

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52.3 km

Saint-Gervais and Saint-Protais Church

Highlight • Other

The church depends on the parish of Saint-Joseph-des-deux-rives (local relay), attached to the diocese of Grenoble-Vienne.

It is undoubtedly this mention of the parish "Saint-Joseph-des-deux-rives" that creates confusion with the name of the church.

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52.4 km

End point

Bus stop

Way Types & Surfaces

Way Types

43.4 km

7.27 km

928 m

890 m

Surfaces