Le Passage du Viaduc begins under the arches of the Glénic viaduct in the small village of Glénic, Creuse, Nouvelle-Aquitaine. This trail-running and hiking event, typically held in spring, offers short and longer off-road routes. While specific race distances may differ by source, the main programme features routes of approximately 9 km, 15 km, and 25 km, with hiking options available alongside the runs. The event has a cap of 500 participants, and registration requires a valid license or equivalent race document.
The viaduct is central to the event: it lends its name, its arches serve as the start point, and the routes run at its base before venturing into the nearby countryside and forest. The shortest race is known as Le Pt’it pont or La p’tit pont, the intermediate option is frequently listed as the Glénic nature race, and the main event is the 25 km Le Viaduc. This 25 km trail includes around 700 metres of elevation gain, presenting a challenging hilly course rather than a flat village run. The participant field naturally includes local club runners, regional trail runners, walkers, and individuals seeking a smaller event in Creuse.