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Hiking trails & Routes

France

Bourgogne-Franche-Comté

Avallon

Tanlay

Notre-Dame Church – Fosse Dionne loop from Saint-Martin-sur-Armançon

Routes

Hiking trails & Routes

France

Bourgogne-Franche-Comté

Avallon

Tanlay

Notre-Dame Church – Fosse Dionne loop from Saint-Martin-sur-Armançon

Hard

hikers

Notre-Dame Church – Fosse Dionne loop from Saint-Martin-sur-Armançon

05:30

20.6km

230m

Hiking

Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.

Last updated: April 24, 2026

Waypoints

Start point

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12.2 km

Ruelle du Cours

Highlight • Historical Site

You have to see this small alley with the stairs in the house passage.

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12.5 km

Notre-Dame Church

Highlight • Religious Site

Originally a simple oratory of a pilgrim's house, it became, over time, the main church of Tonnerre. In the 11th century, the Hôtel-Dieu Notre-Dame was a modest house welcoming pilgrims …

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12.8 km

Fosse Dionne and the town of Tonnerre

Highlight • Historical Site

The Dionne pit is a karst spring known as the Vaucluse source. It is in fact a resurgence located in the city center of Tonnerre. His presence is at the …

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12.9 km

Fosse Dionne

Highlight • Natural Monument

The Dionne pit is a karst source called the Vauclusian source, located in the city center of Tonnerre. It is fed by the infiltration of precipitation into the surrounding limestone …

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13.2 km

Mills' millrace

Highlight • Other

The Mühlengasse is a nice walking connection from the park with the train station there to the old town. A scenic view of the Mill Canal is included.

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13.5 km

Hôtel-Dieu de Tonnerre

Highlight • Historical Site

The Hôtel-Dieu in Tonnerre is a medieval hospital. The building has been protected as a monument historique since 1862.
The Hôtel-Dieu was donated by Margaret of Burgundy and built from …

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13.9 km

Old Armançon Bridge

Highlight • Bridge

From the old stone bridge there is of course a beautiful view of the Armançon River. And a first look at the old town.

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15.0 km

Tonnerre Waterfall

Highlight • Other

20.6 km

End point

Way Types & Surfaces

Way Types

13.7 km

3.71 km

2.15 km

985 m

< 100 m

Surfaces

7.05 km

6.72 km

3.68 km

2.80 km

269 m

< 100 m

Elevation

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

Highest point (240 m)

Lowest point (140 m)

Weather

Wednesday 1 July

28°C

13°C

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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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Notre-Dame Church – Fosse Dionne loop from Saint-Martin-sur-Armançon

Ruelle du Cours

Notre-Dame Church

Fosse Dionne and the town of Tonnerre

Fosse Dionne

Mills' millrace

Hôtel-Dieu de Tonnerre

Old Armançon Bridge

Tonnerre Waterfall

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