RunThrough Snowdonia Sea2Sky 54k 25k & 12k Trail Races September 2026

RunThrough Snowdonia Sea2Sky 54k 25k & 12k Trail Races September 2026

Take on an all-terrain adventure in the heart of Eryri. RunThrough Snowdonia Sea2Sky serves up big views, honest climbs, and unforgettable miles across rugged Welsh landscapes. From beautiful Barmouth beach to the summit of Cadair Idris and all the way back, this is a route to remember. Choose your challenge and enjoy smooth organisation, clear waymarking, and a finish that feels electric.

Expect a mix of coastal viewpoints, forest tracks, rocky paths, and open mountain trails. Settle into a steady rhythm on the ascents, flow on the descents, and soak up panoramic scenery from start to finish.