The Course Nature de Brassioux is a small nature-running event held in Déols, Indre, France, starting and finishing at the Brassioux gymnasium. It provides short off-road races, not road races. The primary options are approximately 6 km and 12 km, with an additional 6 km cani-cross option for participants running with dogs. This event is included in the department's out-of-stadium race schedule and has been held at least 27 times.
The routes primarily follow dirt paths, with one description indicating about 80 percent trails. Some official race listings provide more precise distances, such as 6.150 km, 11.950 km, and 23.550 km, while another mentions a 17.7 km trail, suggesting the available distances may differ by edition or source. FENARAC 36 organizes the race, with ProTiming managing registrations. The modest entry fee suggests a local, community-focused event rather than a large commercial one.