Ramboli'Trail is a trail-running and Nordic walking event in Rambouillet, Yvelines, west of Paris. Held in late April, it offers distances from 5 km to 26 km, suitable for walkers, newer trail runners, and those seeking a longer forest run. The named routes are La Guillaume (5 km), La François 1er and La Mérinos (10 km), La Marie-Antoinette (17 km), and La Forestière (26 km).
The courses traverse the grounds of the Château de Rambouillet, incorporating parkland, nature paths, and forest sections, with some routes including lakes and ponds. The 10 km route gains approximately 82 m, the 17 km about 190 m, and the 26 km La Forestière about 250 m. This offers a hilly terrain characteristic of trail running without being a mountain race. La Forestière is the most popular route, and the event is in its fifth season.