Trail of the Orangery of Bonnelles

Trail de l’Orangerie de Bonnelles is a natural‑terrain trail running event held in the Vallée de Chevreuse near Bonnelles. The official French name, Trail de l’Orangerie de Bonnelles, is used on the event site and registrations are open for the 2026 edition scheduled for Sunday 24 May 2026. The race programme offers three distances—43 km, 20 km and 10 km—with staggered morning starts and options for Nordic walking and free‑pace walkers. Participants are invited to consult the official event website and the indicated registration portal for the latest practical information.

The course is promoted as “100% nature sur les sentiers” and features mixed climbs and descents with scenic valley views through woodland trails. The event is organised with local support (listed as organised by the Caisse des Ecoles with the concours of the mairie de Bonnelles) and the website links to race rules, eco‑responsibility information, past results and photo galleries. Media from prior editions and a registration link are available on the official site, and the organisers provide transport guidance and local access notes for participants. Practical details such as race inclusions, timing systems, cut‑offs and entry fees are not specified on the published pages and should be confirmed on the registration page.