Snowdonia Trail Marathon Eryri 2026

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

Get the little ones involved with the Jones o Gymru Dolbadarn Dash — a lively 500m kids’ fun run on the event field.

• Entry: £3 suggested donation (enter on the day)

• All proceeds go directly to support the Llanberis Mountain Rescue Team

• Race timing: To be confirmed — check back soon for updates!

It’s a great way for young runners to get active and support a fantastic local cause. Bring the family and cheer them on!