Foulées Osnyssoises

The 30th edition of the Foulées Osnyssoises, scheduled for Sunday, May 24, 2026, represents a significant evolution for this signature event in Osny. To celebrate three decades of racing, the organizers have introduced a 21 km urban trail that provides a comprehensive tour of the town’s diverse landscapes, from wooded paths to historical urban corridors.

Event Logistics and Participant Information:

• -- Course Design: The anniversary tracé is designed as an "urban trail," purposefully traversing all neighborhoods of Osny. It balances rural, wooded environments with urban segments and utilizes the town's soft mobility paths.
• -- Technical Partnership: The Entente Agglomération Cergy-Pontoise Athlétisme (EACPA) provides technical expertise, including a network of 70 marshals to secure the various crossing points and varied terrain.
• -- Bib Collection Points: Participants have multiple windows for retrieval: Friday afternoon at Decathlon Cergy, Saturday afternoon at the Hôtel de Ville, or a final limited window on Sunday morning before the start.
• -- Venue Centralization: The heart of the event is the Parc de Grouchy, which serves as the primary coordination hub. Parking facilities are distributed across the town (Gare, Rue de Genicourt, Noirs Marais) to facilitate access.
• -- Podium Recognition: Awards are presented for scratch rankings and category winners, acknowledging top performers across the diverse distance options.

Regional Context and Environment:

• -- Location: Osny is located in the Val-d'Oise, serving as a gateway between the urban density of Cergy-Pontoise and the more rural stretches of the Vexin.
• -- Terrain Characteristics: The "Urban Trail" format highlights natural undulations (dénivelés variés) within the town limits, moving between paved streets, park trails, and the Plaine des Sports.
• -- Historical Significance: The 21 km route specifically incorporates the Chaussée Jules César, a historic road that emphasizes the town's heritage and its integration into the modern sporting circuit.
• -- Atmosphere: As a 30th-anniversary event, the atmosphere is festive and community-oriented, designed to showcase Osny as an active and athletic town.

The Foulées Osnyssoises 2026 offers a rare opportunity to explore the full breadth of Osny’s geographic and historic identity through a high-energy athletic celebration.