Hilaree Nelson was an American ski mountaineer. She became the first woman to summit two 8000-meter peaks (Everest and Lhotse) in one 24-hour push on May 25, 2012. Nelson was named one of "The 25 Most Adventurous Women of the Past 25 Years" by Men's Journal, as well as being named as one of National Geographic's 2018 Adventurers of the Year.