XTERRA Snowdonia Trail Marathon Eryri 2025

The incredible routes explore the trails, gorgeous panoramic views and tough climbs that make Eryri (Snowdonia) National Park so popular with outdoor enthusiasts. Visiting Rhyd Ddu, Beddgelert, Nant Gwynant, Pen y Pass, and Yr Wyddfa (Snowdon), there surely can't be a more striking trail marathon route in the UK!

The Snowdonia Trail Marathon & Half Marathon Eryri are the XTERRA Trail Run World Championship

The XTERRA Trail Run World Series connects the entire trail running community through a global rankings system, regional championships, and for those who qualify - the XTERRA Trail Run World Championship.

If you have qualified for the XTERRA World Championships, you will have received an invitation from XTERRA and will enter via XTERRAPlanet.com, we will add a link here when Championship places are open. For everyone wanting to take part in the open races, chose your distances from those available on our website.

The Ultra Marathon and Marathon are also both UTMB-indexed races.