Snowdonia Trail Marathon Eryri 2027

Expect a challenging and unforgettable journey across rugged trails, steep climbs, forest tracks, and panoramic mountain scenery. The routes showcase some of Eryri’s most spectacular landscapes, passing through Rhyd Ddu, Beddgelert, Nant Gwynant, Pen y Pass, and, for selected distances, the slopes of Yr Wyddfa (Snowdon), the highest mountain in both England and Wales.

Whether you’re chasing a new endurance goal, taking on your first trail race, or planning a trail running adventure in Wales, Snowdonia Trail Marathon Eryri delivers an incredible race experience in one of the most beautiful mountain regions in the world.

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

DRAGONS' DASH

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!