A Dundalk woman is aiming to set a world record by running from Malin Head to Mizen Head in under six days.
Joanne Uí Chrualaíoch set off this morning on a journey that will see her run 112km a day or approximately 560km in total.
The attempt has been sanctioned by the Guinness Book of Records.
Ms Uí Chrualaíoch is raising money for the Carers Association.
She is hoping to raise €1 for every ten steps she takes, which is about €70,000.
She has previously run 41 standard marathons, 11 ultra marathons, which are longer than a normal marathon, and five Ironman triathlons.