Eryri 50K

Eryri 50K

The course climbs Yr Wyddfa, the highest peak in Wales, and crosses the Snowdon massif before returning to Llanberis. The organiser describes terrain ranging from runnable sections to highly technical mountain trail with rocky slabs and narrow ridgelines, through peaks, valleys and ridges. At 3,400 m over 56 km it climbs harder per kilometre than the 100M.

Aid stations stand at strategic points and regular intervals, with cold drinks, water, cola and energy products at the larger ones; the race page publishes no aid-station distances or cut-offs. It suits runners who want the summit of Wales and its ridges in a single daylight day, with the time limit running to 22:30.

This page covers the 2027 edition. Start and finish are both in Llanberis, so supporters can wait in one place, but between the two the runner is out of sight on a mountain. If the runner shares their own Livebib link, family and friends open it in a browser, no account and no app, and see the position on the course line, distance covered and a finish estimate that updates as the race goes, with anything estimated marked as estimated.