Les Courses du Grand Ballon - Willer-sur-Thur

Les Courses du Grand Ballon, organized by US Thann Athlétisme, is a renowned mountain running and trail event held in Willer-sur-Thur. Celebrating over 40 years, it features three distinct courses: the challenging Montée (14.2 km with 1220m elevation gain), the Défi du Grand Ballon (25 km with 1320m elevation gain), and the Mini-Trail de l'Ostein (9 km with 350m elevation gain). The event is open to all participants and includes a national classification for the Montée.

Free shuttle services are provided for runners between the summit and the starting point, enhancing the overall experience. Visit the organization's website for the most recent information.