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View of the Saut du Rhône – View of Vertrieu castle loop from Lagnieu

View of the Saut du Rhône – View of Vertrieu castle loop from Lagnieu

Moderate

4.5

(2)

riders

View of the Saut du Rhône – View of Vertrieu castle loop from Lagnieu

02:53

65.4km

520m

Road cycling

Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride. The starting point of the route is right next to a parking lot.

Last updated: August 24, 2026

Tips

The surface along some of this route may not be suitable

Some segments of your route comprise a surface that may not be suitable for your chosen sport.

After 4.80 km for 254 m

After 31.6 km for 136 m

Waypoints

Start point

Parking

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19.1 km

Étang de la Tuille

Lake

29.1 km

Château Delphinal of Crémieu

Highlight • Castle

The Delphinal Castle (12th century), from the top of its strategic promontory, bears witness to the development of the city: construction of imposing fortified gates (14th century), a majestic market hall (15th century), a convent of Augustins leaning against the ramparts (14th-19th century) then its cloister (16th century)... So many vestiges which are the visible traces of a past where Crémieu had military, economic and religious importance. The medieval city of Crémieu is classified as a ZPPAUP (Urban and Landscape Architectural Heritage Protection Zone).

Source: Isère Tourism

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31.2 km

The 13th-century château de Saint-Julien

Highlight • Other

31.2 km

Ry Pond

Highlight • Other

Magnificent and immense pond, dominated by Château Saint-Julien, also called Château Saint-Jullin.

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31.6 km

Étang de Ry

Lake

38.1 km

Lavoir d'Optevoz

Highlight • Other

Very nice wash house with a splendid limestone lauze roof.

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38.7 km

La Tuille Pond

Highlight • Lake

Optevoz has been occupied since the Bronze Age.
In the 19th century, limestone mining and agriculture were the main activities. At this time, the village became a place of stay for many painters seduced by the light and the landscapes (in particular the Vanne d'Optevoz represented in numerous paintings).

Source: Optevoz website

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51.7 km

Vallée Bleue Lake

Highlight • Lake

La Vallée Bleue, a multi-activity leisure site in the Auvergne Rhône-Alpes region. It brings together a multitude of activities on the banks of the Rhône, in a remarkable natural setting.

Lake on the Haut Rhône with rental of mountain bikes, water pedals, go-karts, stand up paddle, boats with and without a license, jet ski, mini golf, tourist steam train and bike rails, inflatable games, pony rides , flyboard, bicycle repair workshop, treetop course, permanent orienteering course.

Restaurants. Aquapark with heated swimming pool, slide. Green spaces, fishing pond, picnic areas. 3* campsite with mobile home rentals and campervan service area in season, stopover gîte.

Source: Isère Tourism

Translated by Google •

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57.6 km