This event has ended

Trail

Ultra-Trail Snowdonia by UTMB®

15–17 May 2026Llanberis, North Wales, 🇬🇧 United Kingdom
Distances

25 · 77 · 164 km +7

Elevation

9,500m

Races

10

About this event

Ultra-Trail Snowdonia brings the UTMB experience to the dramatic peaks of North Wales, where runners navigate the same rugged terrain that's challenged mountaineers for generations. The routes wind through Snowdonia National Park, passing glacial lakes, ancient forests, and exposed ridgelines with views across to Ireland on clear days. While the longer distances tackle serious mountain terrain that demands respect, the 25K offers a perfect introduction to mountain trail running through this stunning landscape. Based in the historic slate quarrying village of Llanberis, the event captures the wild character of Welsh mountain running. The terrain ranges from technical rocky paths to flowing forest trails, with the ever-changing Welsh weather adding its own memorable element to the adventure.

Distances

Distances and courses for Ultra-Trail Snowdonia by UTMB®
DistanceRaceElevationLevel
25kmERYRI 25K1,400mIntermediate
56kmUTS 50K3,400mAdvanced
77kmUTS 80K2,575mAdvanced
104kmUTS 100K6,500mExpert
164kmUTS 100M9,500mExpert

Scenery

mountaintrailforest

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Past event
Organizer

UTMB Group

Website