Helen Schlachtenhaufen (born March 14, 1995) is an American middle-distance runner.
Helen Schlachtenhaufen signed with Nike in 2021.
Schlachtenhaufen earned NCAA Division I All-American Second Team honors at 2017 NCAA Division I Outdoor Track and Field Championships. Schlachtenhaufen's senior year at Dartmouth in 2017, she captured the Ivy League title for the indoor mile for the second time and set a new Dartmouth record in the 1,500 meters (4:11.15) before graduating with a degree in psychology.
In the 2013 Illinois High School Association aka IHSA Outdoor Track and Field Championships; Helen Schlachtenhaufen placed 11th in the 1600 meters in 5:07.59.
As a senior in 2012, Helen Schlachtenhaufen placed 61st in IHSA Class AAA State XC Championship in 17:46.0.
As a junior at the 2012 IHSA Outdoor Track and Field Championships; Helen Schlachtenhaufen, Caroline Marwede, Lisa Bennatan, Erin Malles placed 7th in the 4x800 meters in 9:39.50.
Schlachtenhaufen held the Lake Forest High School (Illinois) 800 m school record from 2013 to 2017 with her time of 2:18.33 and 1600 m school record of 5:03.63 from 2013 to 2017 when Emma Milburn reset both records.