Yr Wyddfa Ultra
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Yr Wyddfa Ultra 100
Yr Wyddfa Ultra 100 is a 102 mile trail ultramarathon through Snowdonia Eryri National Park with 5,172 m of ascent. The event is scheduled for Saturday 5th September 2026 and has 150 places with a total cut off time of 42 hours. The route leaves Betws‑y‑Coed and passes Beddgelert, the Snowdonia Slate Trail and the Nant Gwynant Valley, including Sygun Copper Mine, Llyn Dinas and Llyn Gwynant. The race is classed as self navigation and runners are tracked online via a live GPS tracker provided by the organiser.
The race uses 11 checkpoints along the course. Checkpoints provide drinks, basic refreshments and, at indoor venues, hot food and hot drinks; vegetarian and vegan options are available. A medic or first responder is present at each checkpoint and strict cut off times apply. Two official dropbag points are provided at the race halfway location and at Beddgelert. A single pacer is permitted from the halfway checkpoint and must be self sufficient and carry the mandatory kit.
Entrants must be at least 20 years old and to have previously completed an organised 50 mile ultramarathon under race conditions and have experience of running in mountainous terrain. Mandatory kit must be carried at all times and includes a hardcopy map, baseplate compass, waterproof coat and trousers, headtorch of minimum 75 lumens and a backup light of minimum 25 lumens, survival bag, at least 500 calories of emergency rations, a minimum 1 litre water container, fully charged mobile phone in a waterproof bag and other listed items. The entry fee is £209. Finishers receive buckle awards by finishing position and top finishers receive trophies. Visit the organization's website for the most recent information.
