Races›United Kingdom›Wales›Snowdonia Trail Marathon Eryri
Caernarfon, Wales, seen from above
Sunday 11 July 2027

Snowdonia Trail Marathon Eryri

Caernarfon, Wales · United Kingdom
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Beneath Yr Wyddfa, through Beddgelert and Nant Gwynant

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Course

Mountain trail routes starting and finishing in Llanberis in Eryri National Park, running out through Rhyd Ddu, Beddgelert, Nant Gwynant and Pen y Pass. Rugged trail, steep climbs and forest track, with the longer distances crossing the slopes of Yr Wyddfa. Energy stations, marshals and support vehicles on course. The 10K runs on the Saturday, the half, marathon and 58km ultra on the Sunday.

57K Ultra57 km
Marathon42.2 km
Half Marathon21.1 km
10K10 km

Key dates

Date confirmed with the organiser · entry window checked by RunCalendar

About

The Snowdonia Trail Marathon Eryri is a challenging trail running event exploring the stunning landscapes of Eryri (Snowdonia) National Park. Runners traverse breathtaking trails with panoramic views, tackling tough climbs through iconic locations like Rhyd Ddu, Beddgelert, Nant Gwynant, Pen y Pass, and Yr Wyddfa (Snowdon). This event offers multiple race distances and is renowned for its spectacular scenery and demanding terrain.

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