RunThrough Snowdonia Sea2Sky 54k 25k & 12k Trail Races September 2026

Name: RunThrough Snowdonia Sea2Sky 54k 25k & 12k Trail Races September 2026
Start: 2026-09-04T23:00:00.000Z
End: 2026-09-04T23:00:00.000Z
Location: Bath House, The Quay, Barmouth LL42 1HB, UK
Rating: 4.7

Sat, Sep 5, 2026

Bath House, Barmouth

RunThrough Snowdonia Sea2Sky 54k 25k & 12k Trail Races September 2026

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Booked 31 times in the last week

£40 - £150

Booked 31 times in the last week

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.

54k, RunThrough Foundation, 25k, and 1 more

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Sat, Sep 5, 2026

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Barmouth, United Kingdom

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4.7
(Reviews)

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Where and when

Location

Bath House, The Quay, Barmouth LL42 1HB, UK

Start times

Saturday, Sep 5, 2026

54k: 8:00 AMRunThrough Foundation: 8:00 AM25k: 10:00 AM12k: 11:00 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

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 directions

By 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 - 17

25k - 18

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.