RunThrough Snowdonia Sea2Sky 54k 25k & 12k Trail Races September 2026
Sat, Sep 5, 2026
Bath House, Barmouth
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About
Take on an all-terrain adventure in the heart of Eryri. RunThrough Snowdonia Sea2Sky serves up big views, honest climbs, and unforgettable miles across rugged Welsh landscapes. From beautiful Barmouth beach to the summit of Cadair Idris and all the way back, this is a route to remember. Choose your challenge and enjoy smooth organisation, clear waymarking, and a finish that feels electric.
Expect a mix of coastal viewpoints, forest tracks, rocky paths, and open mountain trails. Settle into a steady rhythm on the ascents, flow on the descents, and soak up panoramic scenery from start to finish.
Please note, this event is licensed under the TRA and will follow UKA rules.
Please use your EA or TRA number at checkout to receive a £2 discount on this race.
25k, 54k, 12k, and 1 more
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Sat, Sep 5, 2026
View logistics
Barmouth, United Kingdom
View location
4.7
(Reviews)
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Where and when
Location
Bath House, The Quay, Barmouth LL42 1HB, UK
Start times
25k: 10:00 AM54k: 8:00 AM12k: 11:00 AMRunThrough Foundation: 8:00 AM
Event summary
Here are the distances available for RunThrough Snowdonia Sea2Sky 54k 25k & 12k Trail Races September 2026
25k
25km
£55
54k
53km
£95
12k
12km
£40
RunThrough Foundation
£150
25k
25km
£55
54k
53km
£95
12k
12km
£40
RunThrough Foundation
£150
Route information
This 53k, 25k and 12k event in late summer will take you around the beautiful Snowdonia National Park. Starting from Barmouth on the National Park's coast, the route will have stunning scenery, from the coast up to Cader Iris.
This will be a well-marshalled route, so is perfect for both seasoned athletes and first timers. The event begins and finishes on Traeth Abermaw Beach, Barmouth, with both routes heading out over the Barmouth footbridge.
The 53k then joins the Mawddach Trail and ascends Cader Idris before looping back to Barmouth. The 25k takes in the second half of the 50k route with stunning views over Bae Ceredigion and the Llŷn Peninsula.
What's included
- Unique themed medal
- Free race photos
- Chip-timed results
- Post-race goodies
How to get there
Bath House, The Quay, Barmouth LL42 1HB, UK
Get full directionsBy Public Transport
Barmouth Station is a short walk from the event HQ.
Event day logistics
08:00 53k starts | 20:00 cut-off
10:00 25k starts | 15:30 cut-off
11:00 12k starts | 13:00 cut-off
Race Packs
Race Packs must be collected on the day of the event, before the start of your race, from registration. Please be aware that you will not receive anything in the post.
Age Restrictions
12k - 16
25k - 17
54k - 20
Baggage
We will have a secure marquee/room/area where you can leave your baggage. We recommend you bring as little baggage as possible. Your baggage tag is attached to your race number, you simply tear it off and attach it to your bag. To collect, show your number to our staff, and they will help you find your baggage.
Refreshments
There will be five aid stations, but it is highly recommended to self-fuel with food and drinks as water bottles won't be provided.
Race Results
Results will be available here immediately after the race.
Pictures
We will have an official photographer at the event. Please check out our photos page after the race.
Reviews
4.7
45 reviews
33 Broadwick St, London W1F 0DQ
Reg number 10083277
