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).

Career 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. In the triathlon he won a bronze medal at the 2015 European Championships and placed 13th at the 2016 Olympics. Blummenfelt raced the 70.3 Ironman Middle East Championships 2017 for the first time and finished in the top spot, registering a time of 3:40:24.

In 2019, Blummenfelt achieved his first career gold at ITU World Triathlon Series level at the Grand Final in Lausanne on 31 August. He finished the year with a World Triathlon Series (WTS) ranking of 10th overall, capping off a year where he failed to make the podium in any other ITU WTS races, and registered a DNF three times (Tokyo, Hamburg and Yokohama

The 2021 World Championship was held in St. George, Utah on 7 May 2022. The delay and change from the original Kona, Hawaii venue were due to the COVID-19 pandemic. On this date, the Ironman World Championship men's record was broken by Blummenfelt with a time of 7:49:16.

Blummenfelt trains up to eight hours a day: per week, he swims about 10 km; cycles about 300 km; runs about 100 km.

He placed twelfth in the men's triathlon at the 2024 Summer Olympics in Paris. Later that year, Blummenfelt competed in the Ironman World Championships. He placed thirty-fifth after projectile vomiting during the bike leg and completing the marathon run in 3:32.