Catriona McKiernan is a retired Irish long-distance runner, known for her exceptional achievements in road racing and cross-country events. Born on May 24, 1969, in County Westmeath, Ireland, she gained prominence in the 1990s, winning multiple national titles and representing Ireland in international competitions. McKiernan is particularly recognized for her performances in the Dublin Marathon, where she set a course record in 1998. She also excelled in the European Cross Country Championships, earning medals and accolades throughout her career. Her contributions to athletics have made her a respected figure in the sport.