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France

Bourgogne-Franche-Comté

Lons-Le-Saunier

Le Frasnois

Syam Castle and Ironworks – Petit Maclu Lake loop from Le Frasnois

Routes

Bike touring routes & trails

France

Bourgogne-Franche-Comté

Lons-Le-Saunier

Le Frasnois

Syam Castle and Ironworks – Petit Maclu Lake loop from Le Frasnois

Hard

5.0

(2)

riders

Syam Castle and Ironworks – Petit Maclu Lake loop from Le Frasnois

02:38

38.4km

570m

Cycling

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: June 20, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parc naturel régional du Haut-Jura

Waypoints

Start point

Parking

Get Directions

12 m

Narlay Lake Campsite

Highlight • Other

Simple, original, good.
Supermarkets for bikes a bit far, but there is a shop and a restaurant on the square

Translated by Google •

Tip by

5.67 km

Châtelneuf

Highlight • Settlement

A small village with a population of 130 inhabitants. It does not have any shops or restaurants, however there is a lodge to accommodate travelers, more information on:

ressource-nature.com

Translated by Google •

Tip by

11.6 km

Loulle

Highlight • Settlement

Visit the village shop for local cheese, bread and lots more.

Tip by

12.6 km

View of Champagnole

Highlight • Viewpoint

Great view over Champagnole area.

Tip by

22.0 km

Railway Bridge over the Ain

Highlight • Bridge

Spectacular railway bridge between Champagnole and Syam. The route is still in operation.

Translated by Google •

Tip by

23.2 km

This former house of the master of the Syam ironworks Jean-Emmanuel Jobez impresses with its incongruity. This castle, which is inspired by Italian culture, is also called Villa Palatina. Close to the forges, this building and the stables that go with it are however built at a good distance to avoid the noise pollution of the industrial steel site on the riverbank.

This place is surprising in the heart of the Jura. Although the residence is private property, the rooms on the ground floor and the important library on the top floor are open to visitors.

The stables host various events.

Translated by Google •

Tip by

33.5 km

Pont-de-la-Chaux Waterfall

Highlight • Waterfall

37.0 km

Petit Maclu Lake

Highlight • Lake

The Grand Maclu, the Lac d'Ilay and the Petit Maclu together form a string of lakes connected by a small stream.
Located in a Natura 2000 area, the lake offers an exceptional habitat for many animal species. These wetlands are particularly rich: you can see water lilies, reeds, rushes or even sedges.

Translated by Google •

Tip by

38.4 km

End point

Parking

Way Types & Surfaces

Way Types

24.9 km

7.71 km

2.83 km

1.75 km

1.20 km

Surfaces

28.0 km

6.41 km

2.90 km

1.09 km

Elevation

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

Highest point (850 m)

Lowest point (530 m)

Weather

Monday 6 July

33°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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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Syam Castle and Ironworks – Petit Maclu Lake loop from Le Frasnois

Narlay Lake Campsite

Châtelneuf

Loulle

View of Champagnole

Railway Bridge over the Ain