At the age of 16, Holum earned a silver medal in the 500 meter race at the 1968 Winter Olympics, finishing in a three way tie for second place. Holum added a bronze medal in the 1000 meter event.
At 16 years old, Holum won a silver medal in the 500-meter race at the 1968 Winter Olympics, finishing in a three-way tie for second place. Holum also earned a bronze medal in the 1000-meter event.