The event will take place for the second time in Youghal this weekend.
Organisers say over 4,000 runners taking part in today's 113km 'half-Ironman' and tomorrow's full Ironman, will have access to an aid-station every ten minutes - and three 'wet zones' along the course.
Youghal residents have also entered into the spirit of things and are volunteering to 'hose down the Ironmen' which the athletes will no doubt welcome.
