Career
Kolonko represented Germany at the 2004 Summer Olympics in Athens, where he competed in the men"s 100 m breaststroke. He had just barely advanced into the semifinals, after securing the sixteenth spot from the morning"s preliminary heats, clocking at 1:02.09. Kolonko failed to advance into the final, but lowered his Olympic entry time (1:0188) by six hundredths of a second (006), finishing his semifinal run with a time of 1:01.82.