2nd Sirona 100
2nd Sirona 100 is a 161 km ultramarathon in Barmouth, United Kingdom, taking place on Jul 11 – Jul 13, 2026. This edition has already taken place.
- Date
- Jul 11 – Jul 13, 2026
- Distance
- 161 km
- Elevation gain
- 4501 m
- Location
- Barmouth, United Kingdom
- Format
- Fixed distance