Snowdonia Trail Marathon Eryri

JUL

11-12

2026

Trail races in Llanberis on 11 to 12 July 2026 include 10K, half, marathon and a 57 km ultra that pass Rhyd Ddu, Beddgelert, Nant Gwynant, Pen y Pass and Yr Wyddfa. The event offers an event village, on course support and chip timing.

11-12 Jul 2026

Llanberis, Wales

Website

57 kilometers 27 miles 13 miles 10 kilometers

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Snowdonia Trail Marathon Eryri : event overview

Snowdonia Trail Marathon Eryri is a set of trail races held in Llanberis on 11 to 12 July 2026. The programme includes a 10K, Half Marathon, Marathon and Ultra Marathon, with routes that visit Rhyd Ddu, Beddgelert, Nant Gwynant, Pen y Pass and Yr Wyddfa (Snowdon). The marathon and ultra are ITRA and UTMB indexed.

The event starts and finishes in Llanberis and features an event village with music, commentary, shopping, food, kit demonstrations and toilets. On-course support is provided by marshals, signage, energy stations and support vehicles. Timing is professional with chip timing and live online results.

A family area includes the Jones o Gymru Dolbadarn Dash, a 500 m kids fun run on the event field. Entry to the kids dash is a suggested donation of £3 on the day, with all proceeds going to the Llanberis Mountain Rescue Team. The event is bilingual, with signs, registration and commentary available in English and Welsh.

Distances Visit the organization's website for the most recent information.