Ras y Gader / Cader Idris Mountain Race

Race entries will go live in early January 2026.

Ras y Gader, the Cader Idris mountain race, one of the toughest fell races in Wales, and viewed by many as a classic "must do" race in the calendar.

The event starts and finishes in the market town of Dolgellau, at sea level, and climbs almost 3000ft to the summit of Pen y Gader itself. One of the real challenges of the race is the constantly changing terrain, switching from steep metalled roads to flat tracks behind Gwernan lake, pitched steps up the Pony Path, and picking your way among the boulder fields on the final ascent........and then you've got to do it all in reverse!

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