Plaine des sports d'Osny
L’enceinte de BMX d’Osny est équipé d’une piste de 355m, d’un club house et d’un espace aménagé pour l’accueil du public.

La piste de BMX se compose d’une butte de départ à 5 m, d’une première ligne de 63 m, d’une seconde ligne avec ligne pro et challenge, et d’un éclairage de 100 lux en tous points du circuit. Les trois virages sont en enrobé et les lignes droites en sable de Vignat.

Le bâtiment en projet est composé de deux vestiaires femmes et hommes, d’un club house et d’un bureau.

L’espace réservé aux équipes permettra d’accueillir 40 emplacements de 4x4 m sur une surface totale de 1 300 m².

L’espace réservé aux spectateurs sera indépendant de l’espace réservé aux pilotes et sera protégé.

L’enceinte est intégré dans un espace clos d’environ 1 hectare. Le parking d'une superficie de 1 800 m² accueille 70 places de stationnement environ.

Le site est situé à la sortie 12 de l’Autoroute A15  à 25mn du stade de France et 36 km de Paris intramuros dans une zone boisée voisine d’un site sportif et de loisirs.
La piste de BMX d’Osny est située au cœur de l’agglomération de Cergy Pontoise (210.000 habitants) qui compte de nombreux atouts en termes d’hébergement, de restauration, de transport, de loisirs, et d’activités sportives.

La ville d’Osny voisine du Parc Naturel du Vexin possède de nombreux atouts culturels puisqu’elle a été le repère de nombreux artistes au XIXe siècle. Elle a eu la chance d’accueillir les peintres qu’étaient Monet, Pissarro ou encore Thornley. Un musée lui est d’ailleurs dédié au sein du Château de Grouchy.

Il s’agit d’une des pistes les plus reconnues d’Ile de France. De nombreux pilotes Elites viennent s’y entraîner tous les ans et vantent sa qualité technique.
Challenge National Nord 2004
 	Challenge National Quart Nord-Est 2012
 	Challenge National Quart Nord-Est 2016
 	Challenge National Quart Nord-Est 2019
 	Une étape de coupe régionale organisée tous les ans
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