7 upcoming events in Snowdonia
July 2026
Snowdonia Trail Eryri 10K
A scenic, fully-supported 10K trail run through the landscapes around Llanberis taking in the lower slopes of Snowdon and Dolbadarn Castle woodlands.
Snowdonia Trail Marathon Eryri
A weekend of trail running events including Marathon, Ultra, Half Marathon and 10K starting and finishing in Llanberis in Eryri National Park.
Sesiwn Fawr Dolgellau
A lively bilingual world music festival held in the town of Dolgellau, returning for its 33rd time with an opening gig at St Mary's Church.
International Snowdon Race / Ras Rhyngwladol yr Wyddfa
The 49th edition of this iconic ten-mile mountain race from Llanberis to the summit of Snowdon and back, one of Europe's toughest endurance challenges.
August 2026
Snowdon at Night 2026
An overnight charity challenge climbing Snowdon via the Llanberis Path by head torch to witness dawn across the peaks of Snowdonia.
SkyRun Eryri
Wales's premier Skyrunning event at Rhyd-Ddu with race distances of 16, 27, 38 and 55km across the high peaks of Eryri.
October 2026
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.