Katelyn McCormack was born and raised in Warrensburg, MO, a college town an hour away from Kansas City. She attended the Warrensburg school district and began her color guard career in 7th grade. Once entering high school, she began participating in the marching band fall guard. In her senior year, she began spinning with Synchronicity, a group based out of KC, for a total of two seasons (2017, 2018). The following year, she spun with Avidity for their final season (2019). Since then, she has continued spinning in Saint Louis and has found her home in La Voûte Performance Ensemble, where she has been a cast member for the 2020 and 2021 seasons.