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Yr Wyddfa Ultra 100

Name: Yr Wyddfa Ultra 100
Start: 2025-09-06
End: 2025-09-06
Location: Betws-y-Coed

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 runners to carry mandatory safety and navigation kit.

With a 40-hour cut-off time, the race accommodates 250 participants and offers live GPS tracking. Finishers earn distinctive buckles based on their placement, and the event emphasizes safety, environmental care, and mountain experience. Entry is by application, requiring prior ultramarathon and mountain navigation experience. Visit the organization's website for the most recent information.

United Kingdom Wales Betws-y-Coed

Race information

Website

102 mi

5788 m+

Yr Wyddfa Ultra 100 Mile

Visit the organization's website for the most recent information.

Trail runs nearby

Mon - Sat Sep 1-6

Montane Dragon's Back Race

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Dragon’s Back Race® is a legendary six-day, multi-stage ultra running journey along the spine of Wales. The Full Dragon covers about 380km with 16,400m of ascent, starting at Conwy Castle and finishing at Cardiff Castle. Run every September, the route traverses dramatic Welsh terrain across six days..

UTMB Index

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