At the UCI Para-cycling Road World Championships, he has won five golds as part of his thirteen accumulated medals from 2014 to 2022.

[1] He graduated with a Bachelor of Science at the University of Johannesburg and completed an honours degree specializing in investment management.

[10][11] In cycling, du Preez won multiple gold and silver medals at the UCI Para-cycling Road World Championships.

[16][17] At the 2020 Summer Paralympics held in 2021, du Preez won gold at the time trial for H1 competitors.

[21] In 2016, du Preez was nominated for the Laureus World Sports Award for Sportsperson of the Year with a Disability.

[22] Prior to competing at the Summer Paralympics in 2021, du Preez broke his coracoid process and acromioclavicular joint from a fall.