Olympic silver medalist Sonia O'Sullivan is among an estimated 6,000 people taking part in today's 'Great Pink Run'.
It's taking place in the Phoenix Park in Dublin in aid of Breast Cancer Ireland.
The event, which is now in its fourth year, has attracted thousands of people to undertake either a 10k Challenge or 5k Family Fun Run.
Last year, over 4,500 people participated, raising 150 thousand euro towards cancer research.
