TRAIL26KUTMB World Series
Snowleader Trail du Besso
Ayer, SwitzerlandChoose the distanceTap a distance: the course, fees, times and rules below update for that race.
Mountainous
At a glance
Snowleader Trail du Besso 2027 takes place in september 2027 (exact day to be confirmed) in Ayer, Switzerland. Distances: 59 km, 25.5 km.
- Date
- September 2027 · Date to be confirmed
- Location
- Ayer, Switzerland
- Distances
- Trail du Besso 59K · Competitive
- Tour du Roc 25.5K · Competitive
- ITRA points
- Trail du Besso 59K 3 · Tour du Roc 25.5K 2
- Official website
- traildubesso.com ↗
- Series
- UTMB World Series
- Status
- To be confirmed
Last updated: 19 October 2026
Rules and requirements
CertificationsITRA