RunThrough Snowdonia Sea2Sky

SEP

5

2026

Explore the rugged Welsh landscapes at the RunThrough Snowdonia Sea2Sky trail races. Choose from 12k, 25k, or 54k distances on a route from Barmouth beach to Cadair Idris summit. Enjoy chip timing, a themed medal, and free race photos.

Sat 5 Sep 2026

Barmouth, Wales

Registration

54 kilometers 25 kilometers 12 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

Course Description

The RunThrough Snowdonia Sea2Sky event takes place on Saturday, 5 September 2026 in Barmouth, Wales. The races start and finish at Bath House Beach on The Quay.

Participants can choose from three trail running distances: a 12k, a 25k, and a 54k. The route begins at Barmouth beach and goes to the summit of Cadair Idris and back. It features a mix of coastal viewpoints, forest tracks, rocky paths, and open mountain trails.

Included with Entry

Entry includes chip timing, a unique themed medal, free race photos, and post-race goodies. Each kilometre is marked with distance flags, and marshals are present on the course.

Event Village

A lively event village will be set up at the start/finish area with food and drink options. Visit the organization's website for the most recent information.

54 km

54k

25 km

25k

12 km

12k