The Ramboli'Trail begins and ends at the Bergerie nationale in Rambouillet, utilizing the castle park and adjacent forest. This spring trail and nature-running event offers five distances ranging from 5 km to 26 km, allowing participants to select a short park race, a mid-distance trail, or the extended La Forestière route. The event also features a 10 km Nordic walking or timed sporting hike, broadening its appeal beyond just trail runners.
The longer courses, La Forestière (26 km) and La Marie-Antoinette (17 km), traverse forest tracks, park paths, and pass by the sheepfold, with approximately 200 m and 150 m of elevation gain, respectively. La Merinos is a 10 km nature race on park paths and around the sheepfold, and La Guillaume offers the same setting in a 5 km format. Organized by volunteers from Xtrem Running Trail, affiliated with Rambouillet Sports, the race village also supports ARSLA, with an option to donate during registration.