Course
19 km19 km
12 km12 km
Key dates
- ★Race dayOctober 2027 · date to be announced
Provisional date, projected from last year — the organiser has not announced this edition yet. We show the month only.
About
Le Défi du Fort L'Ecluse is a unique trail running event set in an exceptional historical site. Runners traverse spectacular landscapes near the classified site of the Vierge de Léaz overlooking the Rhône river and the Ecluse gorge. The race's highlight is a challenging passage through the incredible underground gallery of Fort l'Ecluse, featuring 917 stairs.
Your next race, seen from above.
Save Defi du Fort l'Ecluse to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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Save Defi du Fort l'Ecluse to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.