Ingrid Kristiansen is a retired Norwegian long-distance runner, born on March 21, 1956. She is best known for her achievements in the marathon and other road races during the 1980s. Kristiansen set multiple world records, including the women's marathon record in 1985, which stood for over 11 years. Throughout her career, Kristiansen won several prestigious races, including the New York City Marathon and the London Marathon. She was a dominant figure in women's distance running and is often regarded as one of the greatest female marathoners in history. Her contributions to the sport have inspired many athletes worldwide.