Kamil Stoch took part in FIS Nordic World Ski Championships eight times. He debuted in Oberstdorf, where he finished at 37th place on the large hill. Later he appeared in Sapporo, Liberec and Oslo. In 2013 he became a World Champion in Val di Fiemme. On 24 February 2017 he established a new hill record (103.5 m) at Salpausselkä HS97 in qualifications before first competition of 2017 World Championships.