Le Grand 8 des Citadelles du Vertige is a 340 km road cycling event based in Limoux, Occitanie, southern France. The format is straightforward to grasp and challenging to complete: cyclists navigate a long route connecting eight citadels, featuring demanding terrain and technical sections that test both endurance and bike handling. The event's timing is not fixed to a specific season or month, but its location in Limoux, within the Aude valley, surrounded by mountains and preserved countryside, serves as a clear reference point.
The course incorporates the citadels as key waypoints, linking the ride to historic stone sites, distance, and climbing. Some sections lead riders to the summit of these historical locations, while others traverse their base, giving the event the character of a demanding journey through Aude rather than a typical closed-road sportive. Limoux contributes its own local distinction: the town has been producing Blanquette de Limoux, a sparkling wine from Languedoc, since the sixteenth century. Additional nearby attractions, such as the medieval city of Carcassonne and the village of Rennes-le-Château, offer further historical exploration for participants and supporters post-event.