Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary. The starting point of the route is accessible with public transport.

Last updated: November 20, 2025

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Tips

Includes a very steep uphill segment

You may need to push your bike.

145 m in total

Waypoints

Start point

Train Station

Get Directions

3.59 km

Trail in Montmorency Forest

Highlight (Segment) • MTB Park

Here we find a very interesting single with obstacles set up on a fairly technical terrain. Everything is there to have fun mountain biking!

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4.39 km

Réserve biologique intégrale de la Tourbière de la Cailleuse

Nature Reserve

5.04 km

Forest

5.51 km

Carrefour des six Chiens

Highlight • Other

They look like an old couple, they are there peaceful, revealing their eternal love to us. 🥰

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6.92 km

Croix des Frileuses parking lot

Highlight • Parking

Access point on the north side of the Montmorency forest (Béthemont-la-Forêt 95)
it's a steep climb to arrive on the plateau and have access to the slopes groomed by the ONF

Access via Map:

maps.app.goo.gl/hUVJH1KrpihtY4po9

3745+CRH Béthemont-la-Forêt

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16.8 km

Montée de la Pierre Turquaise

Highlight • Other

A must in the Carnelle Forest, used by many cycle tourists with its 8% average. It stings your legs!

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20.8 km

The Sylphes Pond

Highlight • Lake

Much less known than the other 2 ponds of Carnelle and much smaller too, this pond remains very pretty with its island of water lilies.

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21.1 km

The Blue Lake of Carnelle

Highlight • Other

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 …

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25.3 km

Saint-Martin-du-Tertre watchtower

Highlight • Monument

At 218 m altitude, the highest point of Val-d'Oise, you can discover an exceptional landscape on the plain of France, the hills of Châtenay-en-France, Écouen, Maffliers and Paris with the …

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26.1 km

The Château-pital of Saint-Martin-du-Tertre

Highlight • Castle

A beautiful castle, located at the bottom of St Martin du Tertre, it has long served as a hospital. It seems that this is no longer the case. The hospital …

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39.5 km

Réserve biologique dirigée de la Tourbière du Nid d'Aigle

Nature Reserve

40.3 km

Forêt domaniale de Montmorency

Forest

44.5 km

End point

Train Station

Way Types & Surfaces

Way Types

19.2 km

17.1 km

4.25 km

3.26 km

383 m

281 m

Surfaces

25.9 km

8.02 km

6.33 km

2.51 km

937 m

767 m

Elevation

Highest point (210 m)

Lowest point (60 m)

Weather

Today

Sunday 23 November

7°C

6°C

70 %

If you start your activity now...

Max wind speed: 15.0 km/h

to get more detailed weather forecasts along your route

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

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Carrefour des six Chiens

Croix des Frileuses parking lot

Montée de la Pierre Turquaise

The Sylphes Pond

The Blue Lake of Carnelle

Saint-Martin-du-Tertre watchtower

The Château-pital of Saint-Martin-du-Tertre

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