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 age sixteen, Holum achieved a silver medal in the 500-meter race at the 1968 Winter Olympics, tying for second place with two other competitors. He then secured a bronze medal in the 1000-meter event.