Trail Running | Snowdonia Trail Marathon Eryri 2027

Snowdonia Trail Marathon Eryri 2027 Trail Running Snowdonia Trail Eryri 10K

The 10K race runs on Saturday, giving you the trails all to yourself before the longer Sunday events. It’s your chance to run at your pace, soak in the mountain air, and enjoy a more open course experience than ever before.

The race is curated for trail runners of all abilities, offering outstanding mountain views, woodland sections, and a race-day atmosphere without the need to reach ultra distances. It's an achievable adventure with world-class scenery.

Make a weekend of it! You can bring friends or family for their 10K challenge on Saturday, then stay to cheer on the marathoners and ultra runners on Sunday. It’s the perfect weekend to run, support, and enjoy the vibrant event village in Llanberis.

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Route Maps
Route Description
Prices
Important Information

Dates

10 Jul 2027

Location

Llanberis

Distances

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Routes

Female runners in the Snowdonia Trail Marathon

Run - 9.8km

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Route Description

Starting and finishing in Llanberis, the Trail 10K Eryri packs a huge amount of mountain running into a compact course.

The route quickly leaves the village behind and climbs onto the trails and hillsides surrounding Llanberis, where runners are rewarded with sweeping views across the valley, the surrounding mountains, and the unmistakable landscape of Eryri. A varied mixture of trail, track, climbing and descending keeps the course interesting throughout, with around 400m of ascent packed into 10km.

From around 6.5km, the route enters the spectacular Dinorwig Quarry, part of the Slate Landscape of Northwest Wales UNESCO World Heritage Site. Runners weave through a remarkable landscape shaped by generations of slate quarrying, with towering quarry faces, historic workings, and the mountains of Eryri providing an extraordinary backdrop to the closing stages of the race.

Two on-course support points also break up the journey before runners make their way back towards the atmosphere of the event village and finish line.

Accessible enough to be a first taste of mountain running, but challenging enough to demand respect, the Trail 10K Eryri is a short race with a big mountain feel, combining spectacular natural scenery with one of North Wales' most important historic landscapes.

Pricing

Tier 1 Price

Ends: 13/09/2026

£30.99 UK Athletics Affiliated
£32.99 Non-Affiliated

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Tier 2 Price

Ends: 31/12/2026

£32.99 UK Athletics Affiliated
£34.99 Non-Affiliated

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Tier 3 Price

Ends: 04/07/2027

£34.99 UK Athletics Affiliated
£36.99 Non-Affiliated

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Tier 4 Price

Ends: 08/07/2027

£37.99 UK Athletics Affiliated
£39.99 Non-Affiliated

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Important Information

Age

You must be at least 17 years old to take part in this race.

Registration

If you opted for a postal entry, there is no need to register in person before the event. Your Final Instructions will be emailed to you, and they will also be available on the website 10 days before the race.

If your bib is not being posted, you will need to collect it from registration. Registration will take place on Saturday and before the race on Sunday morning. We will confirm specific times in your Final Instructions.

Registration is usually located in the event field in Llanberis, situated next to the Community Centre - LL55 4UR

Start Time

The 10k usually starts at 8:00, though this is subject to change. The race start time will be confirmed in your Final Instructions, which are available to view on the website 10 days before the race.

Cut-Off Times

You have 2 hours and 30 minutes to complete the race.

Feed Stations

Water and High 5 energy drinks and gels will be available at 2 miles/3.2km and 4 miles/ 6.4km. Please note that our races are cupless, meaning you must provide a reusable race cup or bottle to fill at feed stations. Race cups are available at the event shop in the event village.

Prizes

We hold a prize-giving ceremony after the racing; approximate timings will be detailed in the Final Instructions. It is a good idea to listen out for information on any updates that come in over the tannoy. Sometimes the ceremony may be delayed, and we wouldn't want you to miss out. We don't send out prizes after the event, so make sure you attend the ceremony and receive your big Welsh cheer!

Prize Categories for the Trail 10k are (for both men and women)

Overall: Top 3*

Senior: 1st runner

V40: 1st runner

V50: 1st runner

V60: 1st runner

V70: 1st runner

All prizes must be collected on the day.

* If any runner places in Overall and Vet, then a drop-down system will occur.

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