A 50 mile mountain ultramarathon in Eryri focused around Yr Wyddfa (Snowdon), using high-level trails and valley paths across rugged terrain. The course features sustained climbs, technical descents and exposure on higher ground, with significant elevation for the distance. Underfoot conditions vary between rocky trail and rough mountain path. Course marking, navigation approach and aid station provision are specified by the organiser’s official materials.

• Other races at the same event:
Yr Wyddfa Snowdon Ultra 100