France
May
4
Sunday
Les Courses du Grand Ballon - Willer-sur-Thur
The Les Courses du Grand Ballon - Willer-sur-Thur will take place in Willer-sur-Thur on Sunday 4 May 2025. You can run between 9 and 25 kilometers. Visit the organization's website for the most recent information.
Always double-check with the organizer's website – things can change, and we might have sprinted past a few details!
25 km
Le Défi du Grand Ballon
14 km
La Montée
9 km
Le Mini-Trail de L'ostein
