Telfer is a trans woman but competed on the Franklin Pierce University men's track and field team in 2016 and 2017. In the 400 m hurdles at the 36-inch men's division height, she ranked 200th in 2016 and 390th in 2017 among NCAA Division II athletes competing in that event in the men's division those years. Under NCAA rules, transgender athletes can compete in women's events after completing one calendar year of testosterone suppression treatment. Telfer gained wide public recognition after Donald Trump Jr. quoted an article title referring to Telfer as a "biological male," calling her recent competition wins a "grave injustice" against "young women."
Telfer qualified for the NCAA Women's Division II Outdoor Track and Field Championships in 2019, ranking third in 60-meter hurdles and seventh in the 200-meter dash nationally in the women's division. She finished sixth in the 60-meter hurdles finals, and first in the 400-meter hurdles finals at the 30-inch women's division height.
- "An NCAA sprinter is breaking women's records—after competing as a man last season". TheBlaze. 26 February 2019.
[Telfer] is the top women's competitor in the 55-meter dash and the 55-meter hurdle events, and was named the Most Outstanding Track Athlete at the Northeast-10 Conference Championship event.
- "NCAA Policy on Transgender Student-Athlete Participation". Washington & Lee.
- Cece Telfer at World Athletics
- "Telfer Shines Again for Women's Track & Field at John Thomas Terrier Classic". Franklin Pierce. 25 January 2019.
- Ennis, Dawn (26 February 2019). "Donald Trump, Jr. calls trans athlete's success 'grave injustice' to women". Outsports.
- "Top Ranked College Women's NCAA Star Was Born a Man". David Harris Jr. 26 February 2019.
- Villarreal, Daniel (26 February 2019). "Turns out Donald Trump Jr. has some transphobic views too, just like his dear ol' dad". www.queerty.com.
- "Track & Field has Three Selected to NCAA Championships". Franklin Pierce. February 26, 2019.
- Ennis, Dawn (March 10, 2019). "CeCe Telfer is a trans athlete who doesn't win every time". Outsports.