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Xterra Snowdonia Trail Marathon Eryri

Llanberis, United Kingdom • 12 Jul 2026

Snowdonia Trail Marathon Eryri in Llanberis, North Wales, offers a choice of 10k, half marathon, marathon, and ultramarathon routes across Snowdonia’s rugged trails. The course winds around iconic hills, with climbs toward Yr Wyddfa (Snowdon) and sweeping views over Eryri’s mountains and lakes. The event promises a lively village atmosphere with music, signposting, energy stations, and on-course marshals, plus finishers’ mementos reflecting local history.

Families can join the Jones o Gymru Dolbadarn Dash (500m). Proceeds support the Llanberis Mountain Rescue Team. The Ultra and Marathon are UTMB-indexed races, highlighting the event’s prestige.

A supportive community atmosphere and dramatic scenery make it a standout challenge. Visit the organization's website for the most recent information.

United Kingdom Wales Llanberis

Race information

Website Registration
UTMB 20K UTMB 50K
57 km
Ultra Marathon
27 mi
Marathon
13 mi
Half Marathon
10 km
10k
Visit the organization's website for the most recent information.
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