A 50 km looped ultramarathon in the Nidderdale Area of Outstanding Natural Beauty starting and finishing near Pateley Bridge. The route follows sections of the Nidderdale Way across moorland, farmland tracks and valley trails with sustained rolling elevation. Surfaces include stone track, grass paths and rural footpaths, with exposed sections on higher ground. The course is marked and supported with aid stations positioned around the loop.

• Other races at the same event:
Nidderdale Way 56 Mile Ultra Marathon