#race
TSY Trail des Sources de l'Yvette
Sep 20, 2026
Running, Walking
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The TSY Trail des Sources de l'Yvette is a one-day trail running festival centred in Lévis-Saint-Nom in the vallée de Chevreuse. The organisers, TSY (Trail des Sources de l'Yvette), stage multiple distances on scenic forested routes that highlight châteaux and countryside landscapes. The event combines technical but runnable trail terrain with family-friendly programming and media galleries showcasing past editions.
The 2026 edition (noted on the organiser site as the 7ème édition) offers multiple competitive and non-competitive options, including long, medium and short trail distances plus a randonnée / marche nordique. The event is run from a central start area in Lévis-Saint-Nom and promotes a community atmosphere, on-course services and prize-giving for race winners. Entrants register via the official organiser site and a dedicated registration portal linked from the event pages.
In front of the salle polyvalente, Route d'Yvette, Lévis-Saint-Nom, Yvelines, France
