[1] Peacock was born on 23 June 1991 three months premature that resulted in him being diagnosed with hemiplegia cerebral palsy.

[2][3] He has completed a Bachelor of Commerce in Accounting and Finance from Bond University.

[4] During his high school years, he participated in able-bodied running and then cycling in his early 20's.

He won the bronze medal in the Men's PTS4 at 2022 World Triathlon Championship Series in Abu Dhabi.

[1][6] In 2024, trains with the Eloitik Professional triathlon squad based in Melbourne and a Victorian Institute of Sport scholarship athlete.