If you love lacing up your trainers on holiday, you have picked the right corner of Wales. Betws-y-Coed sits at the heart of a calendar packed with running races near Betws-y-Coed, from a mountain marathon that circles Yr Wyddfa to coastal half marathons and gruelling triathlons. Whether you are training for your first 10k or chasing a personal best over 26.2 miles, the village makes an ideal base. Below, we have rounded up the events worth planning your visit around, along with the organiser to contact for exact dates and entry details.
Marathon Eryri: A Big Day Out in October
Formerly known as the Snowdonia Marathon, Marathon Eryri has grown into one of the UK’s most celebrated road races since it began in 1982. Held in October each year, it draws thousands of runners to Llanberis to tackle a route that climbs the Llanberis Pass, drops through Beddgelert, and finishes with a testing pull up to Bwlch y Groes before the final descent home. Entry runs by ballot through the organiser, Snowdonia Marathon Cyf (snowdoniamarathon.co.uk), so early planning matters if you want a place on the start line. Consequently, many runners book their stay in Betws-y-Coed well ahead, using the village as a quiet retreat before facing the mountains.
Triathlon Season: Slateman and Snowman
For multisport athletes, summer brings two of Wales’ toughest triathlons to our doorstep. Both are organised by Always Aim High Events (alwaysaimhighevents.com) and draw competitors from across the UK, keen to test themselves against real mountain terrain rather than a flat, forgiving course. Their website carries the full race calendar, so it’s worth bookmarking if you plan to make a season of it.
Slateman Triathlon, Llanberis
Held in June, the Slateman starts and finishes in Llanberis and takes in the UNESCO listed Dinorwic slate quarries on its run leg. Sprint, Standard and Legend (70.3) distances are all available, so newcomers and seasoned athletes alike can find a suitable challenge. Its June date means competitors enjoy warmer water for the swim and a genuinely festive atmosphere in the town afterwards.
Snowman Triathlon, Plas y Brenin
Closer still to Betws-y-Coed, the Snowman Triathlon takes place in July at Plas y Brenin in Capel Curig, only a few miles up the valley. Swimmers take on Llynau Mymbyr beneath Yr Wyddfa before cyclists head towards Beddgelert and Blaenau Ffestiniog, then runners face the notorious climb up Moel Siabod. It is regularly named one of the toughest multi terrain triathlons in the UK, and with good reason. Because the race village sits so close by, guests can watch the swim start, return for breakfast, and still catch competitors finishing that afternoon.
More Running Races Near Betws-y-Coed: Half Marathons
If a full marathon or triathlon feels ambitious, several excellent half marathons take place within easy driving distance, all organised by Run Wales (runwales.com). Each one showcases a different side of this dramatic landscape, from castle walls to open moorland, and Run Wales’ own site is the best place to check the current year’s date and book your entry.
Conwy Half Marathon
Held in November, the Conwy Half Marathon starts and finishes on the quayside beneath the town’s medieval castle. Runners follow the river towards Deganwy, continue along Llandudno’s West Shore, then circle the Great Orme before returning to Conwy. Entries are capped and typically sell out early, so it’s worth booking ahead if this scenic route appeals to you.
Mulberry Half Marathon
Previously known as the North Wales Half Marathon, the Mulberry Half Marathon runs in July and blends road and off-road sections, climbing over Conwy Mountain before descending to a dramatic finish along Conwy Morfa beach. Since the finish sits on tidal ground, the exact date shifts slightly year to year to suit the tides, so check with Run Wales before booking travel. Because the terrain switches between tarmac and trail, many runners choose a hybrid shoe for the day.
Snowdonia Half Marathon, Llanrwst
Just down the valley from Betws-y-Coed, Llanrwst hosts the Snowdonia Half Marathon each May, following country lanes through the Conwy Valley and past Llyn Geirionydd and Llyn Crafnant before returning via Gwydyr Castle. It remains a friendly, tough little event, known for a steep climb around mile eleven and for village charm rather than big city crowds.
Making Betws-y-Coed Your Race Weekend Base
Staying in Betws-y-Coed puts you within thirty minutes of every race mentioned here, while still offering a peaceful place to rest before and after competing. At Bryn Bella, we regularly welcome runners and triathletes throughout the season, and we’re always happy to share local knowledge on parking, road closures and the best pre-race breakfast. For exact dates and entry, head straight to the organiser’s website linked above; then get in touch with us to check availability and start planning your stay.