Kristian Blummenfelt

Kristian Blummenfelt (born 14 February 1994) is a Norwegian triathlete, Olympic and world champion, competing at short course (sprint and standard distance), 70.3 (half-Ironman) and 140.6 (Ironman) distances. He won the gold medal in the men's triathlon at the 2020 Summer Olympics held in Tokyo, Japan. He is the 2021 Ironman World Champion at the first World Championship held at Saint George, Utah on May 7, 2022. On 5 June 2022, Blummenfelt became the first person to complete an Ironman-distance triathlon in under seven hours during the Pho3nix Sub-7 Sub-8 event at the Lausitzring race track in Germany. Blummenfelt set a new unofficial world record for the Ironman-distance triathlon, in a time of 6:44:25. In late January 2026, he achieved the highest V̇O₂ max ever tested with 101.1 mL/(kg·min).

Blummenfelt is the world record holder for the 70.3 distance, setting a time of 3:29:04 in 2018 and both repeating the feat and bettering his own mark in 2019 with a time of 3:25:21. This was the third victory for him in as many years at the Ironman 70.3 Middle East Championships held in Bahrain. Despite competing in the ITU World Triathlon Series for a number of years, his highest finish was second place until 31 August 2019 when he took the gold at the Grand Final in Lausanne. Blummenfelt was part of a 1-2-3 Norwegian finish at WTS Bermuda in 2018, finishing second to his compatriot Casper Stornes and ahead of their third teammate Gustav Iden. This was the first time this feat had been achieved in the ITU. A similar feat was achieved at the 70.3 Middle East Championships in Bahrain in 2018, with Blummenfelt finishing first ahead of Iden with Stornes in third place.