Katie Schide (born January 24, 1992) is an American professional trail and mountain runner living in France. Schide has won some of the most prestigious 100-mile ultramarathons in the world, including the Ultra-Trail du Mont-Blanc, the Grand Raid de la Réunion (La diagonale des fous), the Western States Endurance Run, and the Hardrock Hundred Mile Endurance Run.
Biography Schide was born and raised in Gardiner, Maine. She grew up hiking and playing field hockey, and later worked at mountain huts in the White Mountains.
She attended Middlebury College as a geology major, and began racing trails as a master's student at the University of Utah. Schide completed her PhD in geology at ETH Zurich in 2022, where she studied landslides and erosion caused by earthquakes. Since 2019, she has lived in the small alpine village of Saint-Dalmas-le-Selvage in France. In addition to ultramarathons, Schide races skimo.
Notable race results Schide has won or had podium finishes at many of the largest and most competitive ultramarathons in the world. In 2024, she broke the Ultra-Trail du Mont-Blanc women's course record, completing the course in 22 hours, 9 minutes and 31 seconds ― 21 minutes faster than the previous course record held by fellow American runner Courtney Dauwalter.
In 2025, she broke the Hardrock Hundred Mile Endurance Run women's counter-clockwise course record, completing the course in 25 hours, 50 minutes and 23 seconds ― 21 minutes faster than the previous course record held by fellow American runner Courtney Dauwalter. With this, Schide became the first woman to complete Hardrock in less than 26 hours.
2025 Hardrock Hundred Mile Endurance Run Colorado 1st 2024 Ultra-Trail du Mont-Blanc (UTMB) Switzerland, Italy, France 1st 2024 Western States Endurance Run California 1st 2024 The Canyons Endurance Runs by UTMB California 1st 2023 Le Grand Raid De La Réunion - La Diagonale des Fous La Réunion 1st 2023 UTMB - Orsieres-Champex-Chamonix (OCC) Switzerland, France 2nd 2023 Western States Endurance Run California 2nd 2023 Trail Des Balcons d'Azur France 1st 2023 EcoTrail Paris France 1st 2022 Ultra-Trail du Mont-Blanc (UTMB) Switzerland, Italy, France 1st 2022 Val d'Aran by UTMB - CDH Catalonia, Spain 1st 2022 Greenweez MaXi-Race France 1st 2021 Swissalpine Davos - K43 Switzerland 1st 2021 La Sportiva Lavaredo Ultra Trail Italy 2nd 2021 Ergysport Trail Du Ventoux France 1st 2021 Le Porte di Pietra Italy 2nd 2020 Ultra Trail Cote d'Azur Mercantour (UTCAM) France 1st 2020 Ubaye Trail Salomon France 1st 2019 Madeira Island Ultra Trail Madeira 2nd 2018 UTMB - Courmayer/Champex/Chamonix (CCC) Switzerland, Italy, France 2nd
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