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Hiking trails & Routes
France
Bourgogne-Franche-Comté
Saint-Claude
Morbier

Trou Bleu loop from Trépaillard

Moderate

4.0

(4)

35

hikers

Trou Bleu loop from Trépaillard

01:38

5.16km

190m

Hiking

Moderate hike. Great for any fitness level. Mostly accessible paths. Sure-footedness required.

Last updated: November 6, 2025

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Tips

Your route passes through a protected area

Please check local regulations for:

Parc naturel régional du Haut-Jura

Waypoints

A

Start point

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1

1.56 km

Trou Bleu

Highlight • Natural Monument

Resurgence of water coming from the Lac des Mortes. The Passerelle is a fun bridge that crosses the Bienne.

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B

5.16 km

End point

Way Types & Surfaces

Way Types

1.91 km

952 m

840 m

814 m

647 m

Surfaces

1.60 km

1.40 km

1.35 km

814 m

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Elevation

Elevation

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Weather

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Today

Tuesday 25 November

1°C

-1°C

100 %

If you start your activity now...

Max wind speed: 18.0 km/h

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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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Pic de l'Aigle and belvédère des Quatre Lacs — loop in the parc naturel régional du Haut-Jura

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