He displayed a strong performance in the early rounds of the competition, including his sixth place-finish in one-touch épée fencing.

[2] At the 2008 Summer Olympics in Beijing, Horbacz qualified as a 34-year-old for the second time in men's modern pentathlon, along with his teammate Bartosz Majewski.

During the competition, Horbacz made a strong showing in the pistol shooting segment by hitting a total of 185 targets.

Unlike his previous Olympics, he struggled to maintain his position in épée fencing and freestyle swimming, but managed to improve his performance by lessening obstacle and time penalties in the riding segment.

In the end, Horbacz successfully finished the event in thirteenth place with a score of 5,344 points.