Date
TBC
RunThrough Trails Snowdonia Sea2Sky — SNOWDONIA SEA2SKY 53K
Barmouth, GwyneddWAL
53K· Trail (provisional)
Historical results collected from the UTMB Index.
2 past editions
Race detailsEventsFind this location on a map
WALRunningTrail12K · 12 km / 7.5 mi25K · 25 km / 15.5 mi
RunThrough Snowdonia Sea2Sky
Barmouth, Gwynedd, Snowdonia · WAL
No future date listed
About RunThrough Snowdonia Sea2Sky
RunThrough Snowdonia Sea2Sky is a running event in Barmouth, Gwynedd, Snowdonia, Wales. Recorded disciplines include 12K, 25K. The listed surface is trail. The listed organiser is RunThrough Snowdonia Sea2Sky. No future date is currently listed on ATHRECS. The ATHRECS archive includes editions from 2026. This describes the editions recorded here, not the event's founding date or complete history.
Dates, starts & entry
Times are local to the race. Select the entry route for your distance.
The next date has not been announced here. Check the race website for updates.
Location & race day
Listed venue / area
Snowdonia, Barmouth, GwyneddWAL
Confirm the exact start line, parking and arrival instructions with the organiser. A listed town or postcode may cover a wider area.
About the race
RunThrough Snowdonia Sea2Sky is Saturday 5 September 2026.
- Surface:
- Trail
- Organiser:
- RunThrough Snowdonia Sea2Sky
Results
Public-figure or athlete-approved ATHRECS results, plus verified organiser links.
No verified results links have been added yet.
Past races
25K · 25 km / 15.5 miFinished
Sat, 5 Sept 2026
25K event.
More running nearby
Date
TBC
Snowdonia Sea2Sky — SNOWDONIA SEA2SKY 25K
Barmouth, GwyneddWAL
25K· Trail (provisional)
Historical results collected from the UTMB Index.
1 past editions
Race detailsDate
TBC
Snowdonia Sea2Sky 12K, 25K & 54K
Barmouth, GwyneddWAL
Bath House, The Quay
12K / 25K / 54K· Trail
Snowdonia Sea2Sky — Bath House, The Quay, Barmouth. Listed on runABC (North of England).
Sat
17
Oct
2026
Abergele 5K & 10K
Abergele, ConwyWAL
Abergele and Pensarn Promenade on the North Wales coast
10K / 5K· Road
Abergele 5K & 10K — flat, fast coastal races designed for first-timers and PB attempts.
Sun
18
Oct
2026
Cardiff Taff Trail Half Marathon
CardiffWAL
Pontcanna Fields and the Taff Trail
Half· Paved Trail
Cardiff Taff Trail Half Marathon — Half at Pontcanna Fields and the Taff Trail.
Sun
18
Oct
2026
RTT Gower Trail Half Marathon, 10K & 5K
Oxwich, SwanseaWAL
Oxwich Bay, Gower coast, woodland and dunes
10K / 5K / Half· Trail
Gower Trail races — currently postponed, with a replacement date still to be announced.
Sat
24
Oct
2026
Marathon Eryri
Llanberis, GwyneddWAL
Eryri (Snowdonia)
Marathon· Road
Marathon Eryri — Llanberis, Gwynedd, Wales.
Thu
29
Oct
2026
Severn Bridge 5 Night Races 2026
Chepstow, MonmouthshireWAL
Old Severn Bridge
5mi· Road
Severn Bridge 5 Night Races 2026 — an officially published five-mile fixture at Old Severn Bridge, Chepstow.