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Routes
Road cycling routes
France
Hauts-De-France
Saint-Omer
Blendecques

Thérouanne – Delettes loop from Blendecques

Routes
Road cycling routes
France
Hauts-De-France
Saint-Omer
Blendecques

Thérouanne – Delettes loop from Blendecques

Moderate

9

riders

Thérouanne – Delettes loop from Blendecques

03:09

68.4km

700m

Road cycling

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride. The starting point of the route is accessible with public transport.

Last updated: April 30, 2026

Tips

The surface for a segment of your route may not be suitable

Some segments of your route comprise a surface that may not be suitable for your chosen sport.

After 52.4 km for 111 m

Waypoints

A

Start point

Bus stop

Get Directions

1

10.9 km

Thérouanne Archaeological Site

Highlight • Other

At the entrance to Thérouanne is the site where a magnificent cathedral stood in the Middle Ages... Today, there is practically nothing left on the surface, but a walk in this park after visiting the Maison de l'archéologie allows you to better immerse yourself in the history of Thérouanne and imagine the splendor of the city in medieval times.

Translated by Google •

Tip by

2

11.7 km

Thérouanne

Highlight • Settlement

Thérouanne is stop 77 of Sigeric on his return journey from Canterbury to Rome. The town is also located on the historic road between Boulogne and Arras (Chaussée Brunehaut). In the 16th century, this fortified town was a French enclave within the German Empire, but was razed to the ground by Charles V in 1553. On the hill to the north of the town lie the remains of one of the first cathedrals built in the Gothic style in France. The famous Grand dieu de Thérouanne, which once adorned one of the portals, is now in the cathedral of St-Omer.

Translated by Google •

Tip by

3

17.9 km

This Spanish mill was built around 1635, on the banks of the Lacquette River. It produced flour until 1938, then milling for livestock. It was bought in 1974 to be transformed into a home.
It is built with brick and stone (white limestone). All that remains of the original building is the north gable (17th century), and also a porch. The water wheel is still in place but it no longer turns. The dam forms a pretty waterfall. A turret was added on the river side. It is a very beautiful private home with a beautiful garden in which you can see a stone fountain.

Translated by Google •

Tip by

4

52.5 km

Delettes

Highlight • Settlement

The small village of Delettes includes the hamlets of Upen d'Amont, Upen d'Aval, and Westrehem. Crossed by the Lys River, it boasts a pretty sluice mill built on the banks of the river.

Translated by Google •

Tip by

66.0 km

Bois de l'Ermitage

Forest

B

68.4 km

End point

Bus stop

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Way Types & Surfaces

Way Types

63.4 km

3.44 km

1.47 km

109 m

< 100 m

< 100 m

Surfaces

61.9 km

5.99 km

377 m

130 m

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Elevation

Elevation

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

Highest point (190 m)

Lowest point (30 m)

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Weather

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Thursday 9 July

31°C

17°C

0 %

Additional weather tips

Max wind speed: 18.0 km/h

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