May
25
Sunday
Les Courses du Grand Ballon
The Grand Ballon Races will take place on Sunday, May 25, 2025, offering three different courses in Willer-sur-Thur. The Grand Ballon Ascent is a FFA National Label ranking event covering 14.2 km with a 1220m elevation gain. The Grand Ballon Challenge is a 25 km trail with a 1320m elevation gain, featuring a beautiful loop route to the summit.
The Ostein Mini-Trail is a 9 km course with a 350m elevation gain, offering a view of the valley. Free shuttles will be available for runners between the summit and the starting point. Visit the organization's website for the most recent information.
Always visit the organization's website for the most recent information!
25 km
1320m+
Le Défi du Grand Ballon
14 km
1220m+
La Montée
9 km
350m+
Le Mini-Trail de L'ostein