Mary Cullen won the Finn Valley AC St. Stephen's Day 5k setting a new course record in the process.
The Sligo native who was a European Indoor Bronze medalist in 2009 completed the distance in 15.45 minutes.
Cullen was well inside the previous record of 16.14 held by Olympic Champion Vivian Cherioyut.
She was followed home in the women's category by Finn Valley's Teresa Doherty in 16.52.
Thomas Hayes from Kilkenny won the men's race from David Scanlon, Rathfarnham and Greg Roberts from Derry was 3rd.
The leading master athletes were Dermot Mc Elchar and Catriona Devine with the u15 section winners Karen Gallagher, Finn Valley and Oisin Farren, Letterkenny.
Olympic walker Brendan Boyce, who is bound for Rio in 2016, returned a 20.25 time.
Close to 600 competed in the event.