Career
He also competed in the 20 km at the 1972 and 1976 Games, but failed to finish. In 1972 Kannenberg became the first German athlete to walk 50 km within 4 hours. The same year he was awarded the Silbernes Lorbeerblatt.
Kannenberg was a professional soldier and trained at the sports school of the German Bundeswehr at Warendorf.
After retiring from competitions he coached the German race walking team
