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Snowdonia Sea2Sky in Partnership with Samsung takes you from the golden sands of Barmouth Bay into the heart of Eryri (Snowdonia) National Park.
Starting at sea level, runners climb through ancient Welsh oak woodland, traverse open mountain ridgelines, and descend back to the coast with the Mawddach Estuary glittering below.
This is a true point-to-point adventure — sea to summit and back — through some of the most spectacular and underrated mountain terrain in Britain.
SNOWDONIA SEA2SKY RACES
EVENT INFORMATION :
SATURDAY 5TH SEPTEMBER 2026
