Défi de Fort l'Ecluse

Léaz, France • 19 Oct 2025

Le Défi de Fort l'Ecluse is a unique trail running event organized by the Club athlétique du bassin bellegardien, set in the picturesque village of Léaz. Participants can choose between two courses, 12 km or 19 km, featuring a mix of roads, wide paths, and technical single tracks. The route offers stunning views, including the classified site of the Vierge de Léaz and the impressive underground gallery of Fort l'Ecluse, which includes 917 steps. This event combines athletic challenge with cultural heritage, making it a memorable experience for all runners. Visit the organization's website for the most recent information.

Race information

UTMB 20K
19 km
960 m+
19.3 Km
12 km
Visit the organization's website for the most recent information.
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