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France

Auvergne Rhône Alpes

Grenoble

Saint-Hilaire-Du-Rosier

Saint-Nazaire-en-Royans – Gorges de la Bourne loop from Saint-Hilaire - Saint-Nazaire

Routes

Bike touring routes & trails

France

Auvergne Rhône Alpes

Grenoble

Saint-Hilaire-Du-Rosier

Saint-Nazaire-en-Royans – Gorges de la Bourne loop from Saint-Hilaire - Saint-Nazaire

Hard

5.0

(6)

200

riders

Saint-Nazaire-en-Royans – Gorges de la Bourne loop from Saint-Hilaire - Saint-Nazaire

05:49

80.7km

1,730m

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: June 22, 2026

Tips

Includes very steep uphill segments

You may need to push your bike.

After 26.4 km for 91 m

After 32.1 km for 221 m

Waypoints

Start point

Train Station

Get Directions

1.21 km

Confluence of the Bourne and Isère rivers

Highlight • River

top

Tip by

1.95 km

Altes Aquädukt von 1876

Highlight • Other

The Canal de la Bourne was and still is routed along here.
Further upstream, this river is responsible for the incredibly beautiful Gorges de la Bourne.
This is a must-see

Translated by Google •

Tip by

2.33 km

Saint-Nazaire-en-Royans

Highlight • Other

It is the village that allows us to enter the Vercors. The houses are suspended above the river.

Translated by Google •

Tip by

21.0 km

Arrived in Choranche from Presle, take advantage of this stopover to refill your water. You can easily get supplies in the village or by going for a hike to the Gournier waterfall where you will also find a shop near the entrance to the Gournier cave.

Choranche holds in its heart the waterfall and the cave of Gournier. Real unusual, the cave of Gournier contains an underground lake that you will have to cross to start your caving excursion. Another portion of the cave is open to guided tours.

For more information on the site and the opening to visits of the cave follow these links:

Caving, The cave of Gournier | Isère Tourisme (isere-tourisme.com)

the Grotte de Choranche, an exceptional natural place in the heart of Vercors! (visite-nature-vercors.com)

Translated by Google •

Tip by

26.4 km

Phänomenaler Fotostopp

Highlight • Other

Look at this look. I'm beaming with satisfaction :)

Translated by Google •

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32.0 km

Goule Noire Bridge

Highlight • Other

Slender bridge over a deep gorge. Remarkable outlook. People bathed in the pools below.

Translated by Google •

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32.8 km

Gorges de la Bourne

Highlight • Gorge

Very beautiful gorge in the Vercors.
More information:
de.wikipedia.org/wiki/Bourne_%28Is%C3%A8re%29?wprov=sfla1

Translated by Google •

Tip by

36.1 km

Retenue des Jarrands

Lake

37.5 km

Bourne Gorge

Highlight (Segment) • Other

The most beautiful gorge I have ever seen!
Absolutely amazing!
It goes through tunnels and overhanging rocks along steeply sloping limestone cliffs

Translated by Google •

Tip by

43.6 km

Viewpoint

80.7 km

End point

Train Station

Way Types & Surfaces

Way Types

75.5 km

2.56 km

2.03 km

285 m

270 m

138 m

< 100 m

Surfaces

78.9 km

1.10 km

256 m

248 m

237 m

Elevation

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

Highest point (960 m)

Lowest point (170 m)

Weather

Saturday 29 August

32°C

14°C

16 %

Additional weather tips

Max wind speed: 3.0 km/h

to get more detailed weather forecasts along your route

Comments

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Saint-Nazaire-en-Royans – Gorges de la Bourne loop from Saint-Hilaire - Saint-Nazaire

Confluence of the Bourne and Isère rivers

Altes Aquädukt von 1876

Saint-Nazaire-en-Royans

Choranche

Phänomenaler Fotostopp

Goule Noire Bridge

Gorges de la Bourne

Bourne Gorge

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