Yr Wyddfa Ultra 100

The Yr Wyddfa Ultra 100 is an exhilarating 102-mile ultramarathon set in the stunning Snowdonia National Park, featuring an elevation gain of 5788 meters. Scheduled for September 6, 2025, this challenging race allows 250 participants to navigate through breathtaking mountain landscapes, with checkpoints providing essential support along the route. Runners must possess prior ultramarathon experience and demonstrate navigation skills, as the event is self-navigated.

A cut-off time of 40 hours is enforced, and finishers earn distinctive buckles based on their performance. The event emphasizes safety, requiring mandatory gear and offering medical support throughout the course. Visit the organization's website for the most recent information.