16 upcoming events in Snowdonia
October 2026
Dolgellau Farmers Market (October)
Monthly farmers market in Dolgellau selling local food and crafts, held on the third Sunday of the month.
Gwledd Conwy Feast
Food festival on Conwy Quay beside the medieval castle, showcasing Welsh produce, local mussels, street food and live music.
Marathon Eryri (Snowdonia Marathon)
Annual mountain marathon starting and finishing in Llanberis, circling Yr Wyddfa through the heart of Snowdonia National Park.
Snowdonia Marathon Eryri / Marathon Eryri
One of the UK's most iconic and challenging road marathons, following a 26.2-mile route that circles Snowdon, the highest mountain in Wales.
The Fright Express (Y Tren Brawychus)
A new family-friendly Halloween evening train experience on the Welsh Highland Railway between Caernarfon and Dinas stations.
Halloween Trains, Bala Lake Railway
Spooky-season departures on the narrow-gauge line beside Llyn Tegid, a fun family evening out on one of the oldest lakeside railways in Wales during the half-term break.
Cwrw Nant Beer Festival, Betws-y-Coed
Real ale and cider festival with live music held at St Mary's Church in Betws-y-Coed over the Halloween weekend.
November 2026
Dolgellau Farmers Market (November)
Monthly farmers market in Dolgellau selling local food and crafts, held on the third Sunday of the month.
December 2026
Portmeirion Christmas Fair
Festive market weekend of stalls and seasonal entertainment held in the Italianate village of Portmeirion near Porthmadog.
Santa Specials, Bala Lake Railway
Festive steam trips along the shore of Llyn Tegid with a visit from Father Christmas, a classic pre-Christmas weekend treat for young families in the Bala area.
May 2027
Ultra-Trail Snowdonia by UTMB
UTMB World Series trail-running weekend based in Llanberis, offering multiple distances through the Snowdonia mountains.
June 2027
Slateman Sprint Triathlon, Llanberis
A tough sprint triathlon based in Llanberis, with a lake swim, mountain-road cycling and a run through old slate country beneath Yr Wyddfa; great to spectate as well as enter.
July 2027
Snowdonia Trail Eryri 10K, Llanberis
A marshalled trail 10K from Llanberis through Eryri scenery, opening the Snowdonia Trail Marathon weekend with an event village atmosphere for runners and supporters.
International Snowdon Race
Fell race up and down Yr Wyddfa (Snowdon) from Llanberis via the Llanberis Path, marking the 50th anniversary edition.
Ogwen: Yr Helgi Du Mountain Races, Capel Curig
Skyrunning and mountain races of 15K to 40K from Plas y Brenin across the rugged Carneddau and Glyderau ranges of the Ogwen Valley, for experienced hill runners.
September 2027
Triathlon y Bala
Sprint, standard and middle-distance triathlons starting with a swim in Llyn Tegid, followed by closed-road bike and run courses around Bala; family-friendly to watch.