Catherine McKiernan is a retired Irish long-distance runner known for her achievements in road racing and cross-country events. Born on May 21, 1972, in Cavan, Ireland, she gained prominence in the 1990s and early 2000s, winning multiple national titles and representing Ireland in international competitions. McKiernan is particularly noted for her performance in the Dublin Marathon, where she secured victory in 1998. She also excelled in the European Cross Country Championships, earning medals and recognition for her contributions to the sport. Her dedication and talent have made her a respected figure in Irish athletics.