Norn Iron 100 Half Marathon

The Norn Iron 100 Half Marathon on 29 May 2027 is on a spectacular course from Ballintoy to Portballintrae, Northern Ireland.

The course takes runners along the famous North coast and the Giants Causeway, following the already waymarked Ulster Way.

This is a self-navigated course, runners follow the way markers already in place (GPX is provided). There will be no additional signage or marshal's on the course, except for the water refill stop at approximately half way. It is a cup-free event - bring your own cup/water bottle for refilling.

See also the Norn Iron 100 Ultra and the Norn Iron 100 Mini, held on the same weekend.