These are some of the toughest and hardened athletes and they pushed themselves to the ultimate limit to take part in the inaugural Waterville ultra trail running race that saw participants take on a 43km loop of the Kerry Way within an eight hour time limit repeatedly until runners could no longer keep going.
Co Down man running ultra-marathon for friend with MND belfastlive.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from belfastlive.co.uk Daily Mail and Mail on Sunday newspapers.
DERRY-born author and elite mountain runner Moire O'Sullivan captures the beauty and healing qualities of the Mourne Mountains in her latest book, A Quarter Glass of Milk: The Rawness of Grief and the Power of the Mountains.