Yr Wyddfa Ultra

SEP
4-5
2027
A 45-mile mountain ultramarathon across Snowdonia, following high trails over Tryfan and Yr Wyddfa with five checkpoints and required mountain kit.
4-5 Sep 2027
100 miles 50 miles

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About the race

Yr Wyddfa Ultra 50 is a mountain ultramarathon of 45 miles held within Snowdonia Eryri, starting and finishing at the village green in Betws-y-Coed. The route uses mountain trails and the Snowdonia Slate Trail and passes notable features such as Tryfan, the Yr Wyddfa summit, Glyder Fach, Glyder Fawr, Devil’s Kitchen, Llyn Idwal, Llyn Crafnant and Llyn Geirionydd.

The event is limited to 300 places and carries an entry fee of £139. An overall race cut-off of 20 hours applies and there are five manned checkpoints en route; each checkpoint offers refreshments (cola, Tailwind mandarin orange flavour, water, juice), a range of sandwiches, salted potatoes, fruit, snacks, crisps and chocolate, plus vegetarian and vegan options. A medic, first responder or first aider is available at each checkpoint. Checkpoint check-ins are mandatory and failure to register at a checkpoint results in disqualification.

Mandatory kit must be carried at all times and will be checked. Required items include a hardcopy map (OS Explorer OL17 or Harveys XT25/XT40), a waterproof coat with sealed seams, base plate compass, two long-sleeve base layers (one in a dry bag), minimum 1 litre water capacity, fully charged mobile in a waterproof bag, survival/thermal bag, headtorch (min 75 lumens), backup light (min 25 lumens), emergency rations (min 500 calories), GPS tracker provided by the organiser, whistle, waterproof trousers, gloves and a warm hat. The route has low-level alternatives for adverse conditions and race staff coordinate with mountain rescue and park authorities. Visit the organization's website for the most recent information.

100 mi
100 Mile Snowdon Ultra
50 mi
50 Mile Snowdon Ultra
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