Snowdonia Sea2Sky

54K trail ultra with 25K and 12K races from Barmouth into Eryri, featuring mountain trails, woodland, coastal scenery and challenging climbs.

Date Saturday 5th September, 2026
Distance Ultra + other events: 12K, 25K
LocationBath House, The Quay
Town/CityBarmouth
AreaNorth Wales
Start postcodeLL42 1HB
Start time8:00am
OrganiserLucy Harfield

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The Snowdonia Sea2Sky is a trail running event based in Barmouth on the edge of Eryri National Park. The flagship 54K ultra is joined by 25K and 12K races, taking runners from the coast into the mountains before returning to the finish at Barmouth.

The routes combine ancient woodland, mountain trails, exposed ridgelines and coastal scenery, with spectacular views across the Mawddach Estuary and the surrounding landscape. The event is fully supported with marked courses, aid stations and a race village at Bath House Beach.

The Snowdonia Sea2Sky is an outstanding choice for runners looking for a challenging trail event in North Wales. Technical terrain, dramatic mountain scenery and a choice of three distances make it a memorable adventure for trail runners of all abilities.

Location

Results

Results Status
2025 - Snowdonia Sea2Sky 25K & 53K Ultra results
2024 - Snowdonia Sea2Sky 25K & 53K Ultra results
Verified
Chip timing company
Organiser
Organiser’s website
Community
Social/Other
Pending
Results pending

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