Yr Wyddfa Ultra 50
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About the race
Yr Wyddfa Ultra 50 is a 45 mile mountain ultramarathon held in Snowdonia Eryri with an advertised elevation of 2800 m and a field limit of 250 places. The event takes place around Betws-y-Coed and follows mountain and slate-trail terrain past features such as Swallow Falls, Tryfan, Yr Wyddfa summit, Glyder Fach and Glyder Fawr, Devil’s Kitchen, Llyn Idwal, Llyn Crafnant and Llyn Geirionydd. The race includes five checkpoints with on-site medical cover and refreshments including water, cola, Tailwind, fruit, sandwiches and vegan and vegetarian options. Checkpoints have strictly enforced cut-off times and participants must check in at each location or face disqualification.
The overall event cut-off is 20 hours. Entry fee is listed as £119. The 2026 race is noted as full and closed to new entries; transfers to another runner are permitted up to three weeks before race day subject to qualification and an administration fee. The event awards UTMB/ITRA mountain points and issues medals by finishing position with additional trophies for the top three male and female finishers.
It is also part of the GB Ultras 50 Mile SLAM and Grand Slam series. Mandatory kit must be carried at all times and includes a hardcopy map, compass, waterproofs, headtorch, backup light, survival bag, 1 litre water capacity, charged mobile phone and emergency rations among other items. Participants must be at least 20 years old and demonstrate prior ultramarathon and mountain experience; applications are reviewed case by case. Visit the organization's website for the most recent information.
