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Vieille Route de Poissy (start); Parc de la Charmille (finish), Poissy
La Pisciacaise is a community running event held in Poissy (La Pisciacaise) that combines short trail-style races and a non‑competitive randonnée through the Forêt de Poissy–Saint‑Germain‑en‑Laye. The edition for Sunday 12 April 2026 features multiple distances for adults and children and is organised by the Service des Sports of the Ville de Poissy. The event emphasises participation, outdoor recreation and local engagement rather than elite competition.
Races and practical information (programme, règlement, retrait des dossards and inscriptions) are published on the official event pages; key start points are on the Vieille Route de Poissy with finish activity around the Parc de la Charmille. The event site links to registration via the city portal and publishes results and photo galleries from past editions. Participants can expect forested routes, family‑friendly formats and municipal organisation by the Service des Sports – Ville de Poissy.