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Hiking trails & Routes

Saint-Martin-Du-Tertre

The Blue Lake of Carnelle – Le Petit Étang de Carnelle loop from Saint-Martin-du-Tertre

Hiking trails & Routes

Saint-Martin-Du-Tertre

The Blue Lake of Carnelle – Le Petit Étang de Carnelle loop from Saint-Martin-du-Tertre

Easy

4.0

(4)

15

hikers

The Blue Lake of Carnelle – Le Petit Étang de Carnelle loop from Saint-Martin-du-Tertre

01:59

7.24km

120m

Hiking

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: May 16, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Parc naturel régional Oise-Pays de France

Waypoints

A

Start point

Parking

Get Directions

1

1.58 km

The Blue Lake

Highlight • Other

Park here + refill your bottle at a natural spring.
Lots of paths around

Tip by

2

1.83 km

The Blue Lake of Carnelle

Highlight • Forest

Lac Bleu is one of the two bodies of water in the Carnelle forest. On sunny days, its name takes on its full meaning. But there is another reason for …

Translated by Google •

Tip by

2.33 km

Forêt de Carnelle

Forest

4

3.79 km

Covered alley

Highlight • Historical Site

This funerary megalith dates back to the beginning of the Neolithic period! It is the largest and most famous of all the covered alleys in the Paris region, which has …

Translated by Google •

Tip by

5

4.95 km

Route de la Touffe

Highlight • Other

A beautiful descent which precedes a beautiful climb... but be careful of the transition between the two, especially in winter: Lots of mud at the bottom of the descent, possible buffet/sun stop (I did...)

Translated by Google •

Tip by

6

6.47 km

Le Petit Étang de Carnelle

Highlight • Lake

The Petit Étang de Carnelle is located in the heart of the forest of old marl quarries. With an area of 1.3 hectares and a depth of 20 meters, this …

Translated by Google •

Tip by

7

6.73 km

Lac Bleu

Highlight • Lake

B

7.24 km

End point

Parking

Way Types & Surfaces

Way Types

5.23 km

913 m

675 m

422 m

Surfaces

2.51 km

2.42 km

1.77 km

549 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

Wednesday 24 June

40°C

24°C

0 %

Additional weather tips

Max wind speed: 18.0 km/h

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