Snowdonia Half Marathon
The Snowdonia Half Marathon on 10 May 2026 is one the UK’s toughest half marathons, and is part of the Four Castles Series.
This scenic but challenging 13.1 mile course is set in Snowdonia National Park, North Wales, starting and finishing in the village of Llanrwst.
The park is a region of haunting beauty and grandeur, of wild rocky mountains, hidden valleys, cascading rivers, still glacial lakes and deep forests.
Organiser
Series
Four Castle Series
– Next in series (6 September 2026)
Distances/Events
Half Marathon
Source: https://www.runningcalendar.co.uk/event/snowdonia-half-marathon/
Event Website: https://www.runwales.com/e/snowdonia-half-marathon-8642
Coordinates: 53.137033, -3.795732