About the event
Prepare for the ultimate test of endurance on September 6, 2025, with the Yr Wyddfa Ultra 100 Mile, where you'll face the daunting task of conquering 5,788 meters of elevation in the rugged beauty of Snowdonia. This race, organized by GB Ultras, pushes you to navigate steep ascents, rocky trails, and the unpredictable weather of the Welsh mountains. The course includes some of the most iconic landscapes in Wales, with Yr Wyddfa (Snowdon) serving as both a literal and symbolic summit of the challenge. It's not just a race; it's an odyssey that demands both physical prowess and mental fortitude.
Date:
Sat
Sep 6
2025
Location:
Distance:
Elevation profile:
Hilly
Website:
LinkElevation gain:
Number of participants:
350
Find the best training plan for your goals and the distance you’re planning to run:
Stories from Runnas
On September 6, 2025, the Yr Wyddfa Ultra 100 Mile invites you to test your endurance against 5,788 meters of rugged elevation across the dramatic landscapes of Snowdonia. Crafted by GB Ultras, this race is more than a challenge—it's a journey through the heart of Wales, taking you over iconic peaks, including the legendary Yr Wyddfa (Snowdon).
If you are an official race organiser with any questions about this page, please get in touch: races@runna.com
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