McKiernan has held the
Women's national record for the Marathon since 1998 when she achieved a time of 2:22.23 in the
Amsterdam Marathon. She has also held the national record for 15 km and the half marathon since 1997. As of 2012, McKiernan was a running instructor who offered workshops on the technique of
ChiRunning. In August 2023, she was announced as "life coach" of the senior
Cavan county football team. ==Achievements==