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Routes
Hiking trails & Routes
Switzerland
Geneva
Genève
Choulex

Sionnet Marsh and Rouelbeau Ruins Loop from Choulex

Routes
Hiking trails & Routes
Switzerland
Geneva
Genève
Choulex

Sionnet Marsh and Rouelbeau Ruins Loop from Choulex

Moderate

4.8

(8)

27

hikers

Sionnet Marsh and Rouelbeau Ruins Loop from Choulex

02:18

8.86km

60m

Hiking

Hike a moderate 5.5-mile loop from Choulex, exploring the Sionnet Marsh and the historic Château de Rouelbeau Ruins.

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

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1

3.44 km

Sionnet Marsh

Highlight • Natural

A small bog area near Geneva. Pastures, bog grass and small ponds create an idyll that you can cross wonderfully by bike.

Translated by Google •

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2

5.68 km

Château de Rouelbeau Ruins

Highlight • Castle

It is a ruined fortress and a site of national importance. The ruins are surrounded by water, they can still be accessed by a footpath. The fortress was built in the 14th century.

Translated by Google •

Tip by

3

7.64 km

On a sunny day, you can enjoy the view of the vineyards from here. the vines are green and lush in summer. However, in autumn and winter, the view will be more like in the photo...

Translated by Google •

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B

8.86 km

End point

Parking

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Way Types & Surfaces

Way Types

5.47 km

2.05 km

693 m

592 m

< 100 m

Surfaces

2.38 km

2.34 km

2.07 km

1.03 km

905 m

145 m

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Elevation

Elevation

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

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Weather

Powered by Foreca

Tuesday 19 May

22°C

11°C

15 %

Additional weather tips

Max wind speed: 14.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

How long does it typically take to complete the Marais de Sionnet and Rouelbeau loop?

The loop from Choulex is approximately 8.86 km long and generally takes about 2 hours and 18 minutes to complete at a moderate hiking pace.

What is the difficulty level of this trail?

This trail is considered to be of moderate difficulty. While some sections, particularly within the Sionnet Marsh, are flat and wide, other parts may require sure-footedness due to varied terrain. The elevation gain is relatively minor, around 56 meters.

Where can I park to access the trail?

The trail starts from Choulex. While specific parking details are not provided, Choulex serves as the main access point for this loop. Look for local parking options within the village.

What kind of terrain can I expect on the hike?

You will encounter a varied terrain, including sections of road, street, hiking paths, and footpaths. The Sionnet Marsh area features flat and wide paths, making it easily accessible, but expect some uneven ground in other parts of the loop.

What are the main natural and historical features along the route?

The route offers a blend of nature and history. You'll explore the idyllic marshland environment of the Sionnet Marsh, a significant natural highlight. You'll also encounter the historical Château de Rouelbeau Ruins, a 14th-century fortress. Additionally, the trail passes through scenic Genevan countryside and vineyards.

What is the best time of year to hike this loop?

The trail can be enjoyed throughout the year. The Sionnet Marsh is particularly renowned for ornithology, attracting numerous bird species during migration periods, making spring and autumn excellent for birdwatching. Clear days offer the best views of the Jura Mountains.

Can I spot any wildlife, especially birds, in the Marais de Sionnet?

Yes, the Sionnet Marsh is a significant natural area and a renowned 'hot spot' for ornithology. You can expect to see a variety of bird species, especially during migration, making it an excellent location for birdwatching.

Is the Marais de Sionnet and Rouelbeau loop dog-friendly?

The trail is generally considered dog-friendly, allowing you to enjoy the natural beauty with your canine companion. However, it's always advisable to keep dogs on a leash, especially in nature reserve areas like the Sionnet Marsh, to protect wildlife.

Are there any permits or entrance fees required for this trail?

No, there are no specific permits or entrance fees required to hike the Marais de Sionnet and Rouelbeau loop. It is freely accessible to the public.

Are there facilities like cafes or restaurants nearby?

The trail starts from Choulex, and the route passes through the Genevan countryside, which includes charming old villages and wineries. You may find cafes or restaurants in Choulex or nearby villages to refresh yourself before or after your hike.

Is the trail suitable for families with children?

Given its moderate difficulty, the trail is suitable for families with children who are accustomed to hiking. The flat and wide paths within the Sionnet Marsh are particularly accessible, offering an enjoyable experience for all.

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