|Men's short track speed skating|
|1994 Lillehammer||5000 m relay|
|1988 St. Louis||5000 m relay|
|1987 Montreal||5000 m relay|
|1993 Beijing||5000 m relay|
|World Team Championships|
Herrnhof competed in the short track speed skating events at the 1988 Winter Olympics when this sport was a demonstration sport. He was a member of the Italian relay team which finished second in the 5000 metre relay.
Though he never reached the top individually in major international competitions, he finished second in 500 m and third in 3000 m and fourth in the overall standings at the 1990 World Short Track Speed Skating Championships. One year later he earns a bronze medal over 1500 m and finishing 7th in the overall classification at the World Short Track Speed Skating Championships 1991 in Sydney Australia. Two years later Herrnhof finished eighth with the Italian team in the 5000 metre relay at the 1992 Winter Olympics. In the 1000 metres he finished 12th.
After his skating career, Herrnhof became an administrator. From 2002 to 2006 he was working as Sports Manager for Speed Skating and Short Track at the Organizing committee of the 2006 Torino Olympic Winter Games. In September 2006, Hernnhof became Speed Skating Sports Director for the International Skating Union, having served for several years as a board member in the Italian Ice Sports Federation. Originate from Brunico, Herrnhof today is living in Piemonte and is married to a former short track speed skater, Cristina Sciolla, who participated in the 1988 and 1992 Winter Olympics.
- "Short Track Speed Skating – Biographies – Hugo Herrnhof". International Skating Union. Retrieved 2014-03-03.
- "ISU Office Holders". International Skating Union. Retrieved 2014-03-03.
- "Hugo Herrnhof: Biography". Sports-Reference.com. Archived from the original on 2014-02-27. Retrieved 2014-03-03.
- "La favola amara dello Short Track azzurro" (in Italian). OlympiaLab.com. Retrieved 2014-03-03.