Yr Wyddfa Ultra 50

Betws-y-Coed, United Kingdom • 6 Sep 2025

The Yr Wyddfa Ultra 50 is a challenging 45-mile ultramarathon held in Snowdonia National Park, Wales, starting and finishing in the village of Betws-y-Coed. Featuring 3,254 meters of ascent, the mountain trail course includes iconic peaks such as Tryfan, Snowdon (Yr Wyddfa), Glyder Fach, and Glyder Fawr, as well as scenic spots like Devil’s Kitchen, Llyn Idwal, Llyn Crafnant, and Llyn Geirionydd. The event accommodates 500 runners and has a 21-hour cut-off time. It emphasizes navigation skills with mandatory map and compass use, offers five well-supported checkpoints, and awards medals based on finishing position. The race is part of the GB Ultras 50 Mile Grand Slam series. Visit the organization's website for the most recent information.

Race information

UTMB 100K UTMB 100M
45 mi
3254 m+
Yr Wyddfa Ultra 50
Visit the organization's website for the most recent information.
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