Ultra Marathon Events Near Betws-y-Coed: Where Snowdonia’s Toughest Trails Begin
Betws-y-Coed does more than welcome walkers and cyclists passing through. On Saturday 5 September 2026, the village green became a start and finish line. Ultra runners gathered at Cae Llan for the Snowdon Ultra, one of the toughest trail races in Wales. Days later, the Dragon’s Back Race set off from Conwy Castle. It began a brutal 380 kilometre traverse of the country. Snowdonia has quietly become a serious destination for ultra marathon events near Betws-y-Coed. Here is a guide to what’s on. It also explains why Bryn Bella makes such a good base for race weekend.
Snowdon Ultra 50 and 100: Starting and Finishing on Our Doorstep
GB Ultras runs two races from the village green each September. Some listings use the bilingual name Yr Wyddfa Ultra instead. The 50 mile race covers 45 miles and climbs around 2,800 metres. Runners follow the Snowdonia Slate Trail past Swallow Falls. From there they push into the high ground around Tryfan, the Glyderau and Llyn Idwal. A 20 hour cut-off applies, and the field is capped at 250 places. That cap is already full for 2026.
The 100 mile race goes further still. It covers 102 miles and climbs 5,172 metres. Eleven checkpoints mark a route that heads out to Beddgelert and the Nant Gwynant valley before looping back. Betws-y-Coed itself works as a checkpoint partway round, on top of hosting the start and finish. Entrants must have completed a previous 50 mile ultra to take part. They also navigate the whole route themselves, using map and compass rather than marked signage. Guests staying at Bryn Bella can walk down to the green to watch runners set off at dawn. Or they can wait up to see them stagger home. Either way makes for a memorable weekend, whether you’re racing, crewing or simply cheering.
Ultra-Trail Snowdonia and the Trail Marathon Eryri: Llanberis Takes Centre Stage
Around 25 minutes from Betws-y-Coed, Llanberis hosts two more major fixtures on the trail calendar. Ultra-Trail Snowdonia forms part of the global UTMB World Series. It ran across five distances in May 2026, from a 25 kilometre taster to a gruelling 100 mile route. Over 2,800 runners from more than 60 countries took part. The race rebrands as Eryri by UTMB from 2027 onwards. That change reflects the national park’s own switch to its historic Welsh name.
Later in the year, Always Aim High Events stages the Snowdonia Trail Marathon Eryri. It offers everything from a 10K to a 58 kilometre ultra. Both events climb through Rhyd Ddu, Beddgelert and Pen y Pass, taking in the lower slopes of Yr Wyddfa itself. Neither route passes directly through Betws-y-Coed. Plenty of competitors choose to stay here anyway. They’re drawn by quieter roads and easy access to both Llanberis and the coast.
The Dragon’s Back Race: The Length of Wales, One Village at a Time
Some call it the world’s toughest mountain race. The Dragon’s Back covers 380 kilometres and 16,400 metres of ascent over six unforgiving days. Competitors set off from Conwy Castle each September. From there they work their way south along the mountainous spine of Wales, towards a finish near Llandeilo. This year’s edition runs from 7 to 12 September 2026. Support crews and early stage spectators pass within easy reach of Betws-y-Coed on their way to and from Conwy. It’s a serious spectacle, and one worth building a short break around, even if you’re only watching.
For the Truly Committed: The Paddy Buckley Round
Not every challenge here has an entry fee or a start gun. The Paddy Buckley Round is a self-supported fell running circuit. It covers around 100 kilometres and 47 summits, taking in Snowdon, the Glyderau, the Carneddau and the Moelwynion. Crucially for anyone staying at Bryn Bella, it also crosses Moel Siabod. That peak rises directly above Capel Curig, just a few miles from our door. Local trail runners often train on these slopes, whether or not they ever attempt the full round. Anyone planning their own route across this ground should check current conditions first. The Eryri National Park Authority is the best source, since weather on these tops can change quickly.
Staying at Bryn Bella for Race Weekend
Bryn Bella sits inside the village of Betws-y-Coed itself. It’s an easy walk from the green where the Snowdon Ultra begins and ends. That makes us a natural base for ultra marathon events near Betws-y-Coed. We offer private on-site parking for guests, along with secure garage space for bikes. Support crews and early risers never have to hunt for a space on race morning. Guests can also browse our collection of local walking and climbing guidebooks. They’re handy for planning a recovery walk, or for scouting a course in daylight beforehand. Take a look at our full range of accommodation if you’re building a trip around one of these events. Then get in touch and we’ll help you find the right room for race weekend.
Frequently Asked Questions
When is the Snowdon Ultra held in Betws-y-Coed?
GB Ultras runs both the 50 and 100 mile races on the same September weekend each year. Both start and finish on the village green.
Can spectators watch the ultra events for free?
Yes. The start and finish area on the village green is open to the public. Supporters can also reach several checkpoints along the route by road.
Is Betws-y-Coed a good base for the Llanberis events?
Yes. Llanberis sits around 25 minutes away by car. That’s close enough for race day, but quiet enough for a proper night’s sleep beforehand.
Do I need previous ultra experience to enter these races?
Most events do ask for it. The Snowdon Ultra 100, for example, requires proof of a completed 50 mile ultramarathon. Organisers won’t accept an entry without it.
Where do I search for ultra marathon events near Betws-y-Coed?
The Snowdon Ultra is the obvious starting point, since it’s the only race that begins and ends in the village itself. From there, Llanberis, Conwy and the wider Eryri fell running scene are all within easy reach.