Arlene Pieper
Arlene Pieper Stine (born Arlene Val Richter; 18 March 1930 – 11 February 2021) became the first woman to officially finish a marathon in the United States, at 29 years old in 1959, when she finished the Pikes Peak Marathon in Manitou Springs, Colorado. Her daughter Katherine, 9 years old, also ran in 1959 and became the youngest competitor at the time to finish the race to the summit of a mountain that was part of the marathon, and the first female runner to reach the summit that year, but did not finish the whole marathon.