Snowdonia Trail Marathon Eryri
Llanberis, United Kingdom • 12 Jul 2026
Snowdonia Trail Marathon Eryri : overview
The Snowdonia Trail Marathon Eryri is a trail running event in Llanberis, North Wales, held on 12 July 2026 and organised by Always Aim High Events. Races start and finish at Y Ganolfan, Llanberis. Routes run through Eryri (Snowdonia) National Park and pass Rhyd Ddu, Beddgelert, Nant Gwynant, Pen y Pass and Yr Wyddfa (Mount Snowdon). The marathon and ultra marathon are UTMB-indexed. A 500 m kids fun run called the Jones o Gymru Dolbadarn Dash takes place on the event field. Proceeds from on-the-day entry donations support the Llanberis Mountain Rescue Team.
Distances and event services
- 10k - 9.8 km
- Half Marathon - 12.9 miles
- Marathon - 27.3 miles
- Ultra Marathon - 57 km
The event features an event village with music, commentary, shopping, food, kit demos and toilets. On-course support includes marshals, signage, energy stations and support vehicles. Timing is by chip with live online results. Finisher mementos reflect local design. Signs, registration and commentary are available in English and Welsh. Tickets for this edition are listed as sold out. Visit the organization's website for the most recent information.