Snowdonia Sea2Sky
–
The Snowdonia Sea2Sky Ultra Marathon on 5 September 2026 is based from Barmouth on the coast of Eryri National Park. Starting and finishing on Traeth Abermaw Beach, the 53km route heads out over the Barmouth footbridge and joins the Mawddach Trail, ascending Cader Idris before looping back to Barmouth. Other distances include a 25km and…