Banwarth was born in Dubuque, Iowa and attended high school at Wahlert Catholic High School. Her team won three state titles and Banwarth graduated with 1,155 kills, 1,093 digs, and 364 aces. She also set school records for digs and aces. Banwarth was named the Iowa Gatorade Player of the Year in 2006.[2]
Banwarth was part of the USA national team that won the 2014 World Championship gold medal when the team defeated China 3–1 in the final match.[3][4] Banwarth retired after the 2016 Rio Olympics and took on a coaching role at her former college, the University of Nebraska, helping the women's volleyball team. She then went on to become the head coach for the Ole Miss starting in the fall of 2020. After a 1-19 COVID-19 shortened first year, in her second season she led the team to their first NCAA tournament appearance in 11 years and their first 20-win (21-9) season in 8 years. In the middle of the 2022 season, Banwarth was placed on leave and eventually she and the university mutually agreed to part ways.[5]
^Benedetti, Valeria (October 12, 2014). "Volley, Mondiale: Usa batte Cina 3-1". La Gazzetta dello sport (in Italian). Milan, Italy. Retrieved October 12, 2014.