Norn Iron Ultra 100

Experience the raw, untamed beauty of Northern Ireland's legendary coast at the NORN IRON 100 festival, a spectacular multi-day running adventure on Saturday, May 30, and Sunday, May 31, 2026. This premier event is centered around the formidable NORN IRON 100 ultramarathon—a monumental 100-mile point-to-point journey traversing the entire Causeway Coast from Donaghadee to Derry/Londonderry, following the iconic Ulster Way. Alongside this epic challenge, the festival also features the NORN IRON 50 ultramarathon and the NORN IRON 100K for those seeking a slightly shorter but no less stunning coastal conquest. Each race is a true test of endurance, navigation, and self-sufficiency against a backdrop of world-famous landmarks like the Giant's Causeway and the Glens of Antrim. The atmosphere is one of profound adventure and camaraderie, where runners embrace the wild and unpredictable elements of the North Coast. Participation demands careful preparation, as the event operates with minimal marshaling, requiring runners to carry mandatory safety kit and follow the permanent Ulster Way markers. By conquering these legendary trails, you'll earn one of the most respected and coveted finisher's medals in the UK ultrarunning scene, a true badge of honor. This is more than a race; it's a pilgrimage for serious trail runners seeking an authentic and unforgettable journey. Registration for the 2026 festival is highly competitive—prepare to test your limits on one of the planet's most dramatic coastlines.