16-year-old American 800m phenom turns pro, signing with Nike

August 25, 2025

Cooper Lutkenhaus, a 16-year-old 800m runner set to become the youngest American to compete at a World Track and Field Championships, is now the youngest U.S. track star in recent history to turn professional.

Lutkenhaus, who is starting his junior year of Northwest High School outside of Dallas, is forgoing his remaining high school and college racing eligibility. Most high school phenoms who turn pro do so after after their senior seasons.

Lutkenhaus turns 17 on Dec. 19. nbc