The Yr Wyddfa Ultra 50 is a premier mountain ultra marathon that tests the limits of endurance runners. Taking place on September 5, 2026, this 50-mile race features significant elevation gain and takes participants through the breathtaking landscapes of Snowdonia National Park. Organized by GB Ultras, the event is renowned for its challenging climbs and epic scenery. It is a must-do for experienced ultra runners looking for a tough and rewarding mountain challenge.
What to Expect
A demanding ultra marathon with technical trails and significant mountain climbing.
Who Should Attend
Ultra runners
Endurance athletes
Mountain runners
Agenda Overview
Race day featuring a 50-mile course through Snowdonia.