Snowdonia Sea 2 Sky Challenge - Kidney Wales
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Snowdonia Sea 2 Sky Challenge

5th September 2026 | Barmouth Beach (LL42 1HB)

Take on one of the most breathtaking and rewarding trail running challenges in the UK with the Snowdonia Sea 2 Sky event, set in the heart of Eryri (Snowdonia National Park).

Starting from the stunning coastline of Barmouth Beach, this unique event takes you from sea level all the way up to the iconic summit of Cadair Idris before returning back to the coast. It’s an unforgettable journey through some of Wales’ most spectacular landscapes, combining coastal views, forest trails, rugged mountain terrain, and panoramic scenery from start to finish.

Choose Your Challenge

Whether you’re new to trail running or looking for your next big endurance test, there are three distances to choose from:

  • 12K – a shorter but still challenging introduction to trail running
  • 25K – a rewarding mid-distance route with stunning climbs and views
  • 53K – the ultimate test of endurance, taking you all the way to the summit of Cadair Idris and back

Event Details

  • Date: Saturday 5th September 2026
  • Location: Barmouth Beach (LL42 1HB)
  • Start Times:
    • 53K – 8:00am
    • 25K – 10:00am
    • 12K – 11:00am

Why Take Part?

Snowdonia Sea 2 Sky is more than just a race—it’s an adventure. Expect:

  • Incredible views from coastline to mountain summit
  • A varied and exciting course across trails, tracks, and open terrain
  • Friendly marshals, clear route marking, and well-stocked aid stations
  • A lively event atmosphere and a well-earned finish line celebration

Fundraise for Kidney Wales

By taking on Snowdonia Sea 2 Sky for Kidney Wales, you’ll be helping to support people across Wales living with kidney disease. Every mile you run and every pound you raise will make a real difference.

Whether you’re chasing a personal goal or taking on a new challenge with friends, this is your opportunity to push yourself while supporting a vital cause.

Kidney Wales have obtained places for this event through Run 4 Charity, each participant must commit to the registration fees below and the minimum fundraising amount.

53K Race – Registration Fee £60 / Minimum Fundraising amount £400

25K Race – Registration Fee £30 / Minimum Fundraising amount £300

12K Race – Registration Fee £20 / Minimum Fundraising amount £200

View terms and conditions of Kidney Wales Charity Places with Run 4 Charity – Please review

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