Štukelj is one of the first Slovene athletes to have risen to the very top of his sport, where he remained right from the World Championships in Ljubljana in 1922 all the way to the 1936 Olympic Games in Berlin, at which point he finished his competitive gymnastics career.Štukelj competed at seven major international competitions and won a total of twenty medals: eight gold, six silver, and six bronze.After World War II, Štukelj was not a supporter of the newly formed Communist regime of Yugoslavia.He took part in the Yugoslav royalist (Chetnik) movement, hostile to Tito's partisans, and maintained contacts with the British Special Operations Executive.Štukelj was presented at the opening ceremony of the Games of the XXVI Olympiad in Atlanta in 1996 as the oldest living Olympic gold medalist at the time, where he shook hands with the current President of the United States at the time, Bill Clinton.