Expected September 2027
Distance
Cutoff
Terrain
The TSY is a trail running event held in Levis-Saint-Nom, featuring 10 km, 21 km, and 47 km distances plus a 10 km hike. Set in the scenic Chevreuse Valley, it offers a friendly and family-oriented atmosphere.
Hilly and fun course
New section each year
What you get
Race photos
On the day
Toilets
Marshals on course
First aid on course
Other questions
No, online registration only.
Yes, spectators are welcome and can view the start/finish area.
Entry fee
Registration isn't open yet. We'll show pricing when the organiser confirms.Lévis-Saint-Nom, France
Expected September 2027
Provisional date, around Sep 19Are you the organiser of TSY - Trail of the Sources of the Yvette?
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