Snowdonia Half Marathon

MAY
10
2026
Read all about the Snowdonia Half Marathon on 10 May 2026 in Llanrwst.
Sun 10 May 2026
Half Marathon

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About the race

Snowdonia Half Marathon (Hanner Marathon Eryri) is a scenic yet demanding half marathon in Snowdonia National Park, North Wales. The course starts and finishes in Llanrwst and traverses wild mountains, valleys, rivers and glacial lakes, earning a reputation as one of the UK’s toughest halves. In 2016 it was redesigned to climb from Trefriw to Llyn Geirionydd and Llyn Crafnant, then over Forest Hill (1:7) at mile 11, finishing via Gwydyr Castle.

The event offers a bespoke medal and technical T-shirt for all finishers, plus marshals, water stations, and on-course first aid, with a strong community-focused Run Wales weekend. There is no fun run. Visit the organization's website for the most recent information.

Half Marathon
Half Marathon

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