Yr Wyddfa Ultra 100
Betws-y-Coed, United Kingdom • 6 Sep 2025
The Yr Wyddfa Ultra 100 is a challenging 102-mile ultramarathon held in Snowdonia National Park, Wales, featuring 5,788 meters of ascent across stunning mountainous terrain. The race starts and finishes in Betws-y-Coed and includes 10 well-supported checkpoints offering refreshments and medical aid. It is a self-navigation event requiring participants to carry mandatory safety and navigation kit.
The race accommodates 250 runners with a 40-hour cut-off time. Participants must have prior ultramarathon and mountain experience. The event offers live GPS tracking and awards finisher buckles in gold, silver, or bronze based on finishing position.
Support crews are allowed at most checkpoints with parking restrictions. Visit the organization's website for the most recent information.