Les Courses du Grand Ballon - Willer-sur-Thur
MAY
10
2026
Read all about the Les Courses du Grand Ballon - Willer-sur-Thur on 10 May 2026 in Willer-sur-Thur.
Sun 10 May 2026
25 kilometers
14 kilometers
9 kilometers
Always double-check with the organizer's website! This page may contain affiliate links.
About the race
The Les Courses du Grand Ballon - Willer-sur-Thur will take place in Willer-sur-Thur on Sunday 10 May 2026. You can run between 9 and 25 kilometers. Visit the organization's website for the most recent information.
25 km
Défi du Grand Ballon
14 km
Montée du Grand Ballon
9 km
Mini-Trail de L'ostein
