Ultrabaie
in Mers-les-Bains
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Long-distance trail run between Baie de Somme and Falaises.
Saint-Valéry-sur-Somme - Mers-les-Bains: outward and return, along the coastal path.
20 Km - 34 Km - 70 Km - 70 Km relay
Schedules
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Schedules
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- On July 6, 2025
