Snowdonia Trail Marathon Eryri 2027

Discover one of the most scenic and challenging trail races in the UK, set within Eryri (Snowdonia) National Park in North Wales. Choose from four distances: Ultra Marathon, Marathon, Half Marathon, or 10k, all starting and finishing in the vibrant adventure town of Llanberis.

The courses take runners through breathtaking landscapes, including mountain trails, forest paths, and rugged climbs. Key locations on the route include Rhyd Ddu, Beddgelert, Nant Gwynant, Pen y Pass, and the summit of Yr Wyddfa (Snowdon), the highest peak in Wales. Whether you're looking to push your limits or experience the natural beauty of Wales on foot, this is a must-run event for trail enthusiasts from around the world.