In the women’s race Daniela Ryf looked almost untouchable at the front, dominating for much of the day and crossing the finish line almost nine minutes clear of Kat Matthews.
Speaking of which, the Brit, who only turned pro in 2019, put in a sensational performance of her own, digging deep to keep plugging away on the run as former Ironman world champion Anne Haug attempted to chase her down.
Daniela Ryf and Kristian Blummenfelt celebrate with a little dance after winning the 2021 Ironman World Championship in St George (Credit: Tom Pennington/Getty Images for Ironman)
Norwegian Kristian Blummenfelt celebrates as he adds the Ironman World Championship to a successful 12 months in which he also became Olympic and World Triathlon champion (Credit: Tom Pennington/Getty Images for Ironman)
Daniela Ryf let’s out a scream of jubilation as she nears the finish line to win her fifth Ironman World Championship (Credit: Tom Pennington/Getty Images for Ironman)
Canadian triathlete Lionel Sanders lets the emotion out as he approaches the finish line to place second during the Ironman World Championship, having just passed Braden Currie moments before (Credit: Tom Pennington/Getty Images for Ironman)
Brit Kat Matthews celebrates a fantastic second-place after crossing the finish line at the 2021 Ironman World Championship in St George, Utah (Credit: Tom Pennington/Getty Images for Ironman)
Braden Currie, who led a big chunk of the race before falling back to third, tackles the hilly run course under the watch of the stifling Utah sunshine (Credit: Tom Pennington/Getty Images for Ironman)
Age-group triathletes enjoy a brief respite from the sun as they tackle the hilly run course in St George (Credit: Tom Pennington/Getty Images for Ironman)
Lauren Parker competes on the handcycle during the race in St George, becoming the third female ever in the handcycle division to finish the Ironman World Championship. She crosses the line in 14:00:47, breaking the record by over 20 minutes (Credit: Tom Pennington/Getty Images for Ironman)
Brits Fenella Langridge and Laura Siddall duke it out on the bike leg of the 2021 Ironman World Championship. Both women will finish the race in the top 10 (Credit: Sean M. Haffey/Getty Images for Ironman)
Brit Kat Matthews grinds it out on the bike leg in St George on her way to an incredible second-place finish (Credit: Tom Pennington/Getty Images for Ironman)
Cameron Wurf puts the power down on the bike in St George, taking Lionel Sanders and eventual winner Kristian Blummenfelt with him (Credit: Tom Pennington/Getty Images for Ironman)
Blue skies and towers of red rock prove a welcome distraction from a tough course at the 2021 Ironman World Championship in St George (Credit: Sean M. Haffey/Getty Images for Ironman)
Triathletes tackle the challenging bike course at the Ironman World Championship, with Utah’s red rocky walls creating a spectacular backdrop (Credit: Tom Pennington/Getty Images for Ironman)
An dives into Sand Hollow Reservoir at the start of the 2021 Ironman World Championships in St George (Credit: Sean M. Haffey/Getty Images for Ironman)
Age-group triathletes get their race started at the 2021 Ironman World Championship in St George with a swim in Sand Hollow Reservoir (Credit: Tom Pennington/Getty Images for Ironman)
Former Ironman world champion Anne Haug collects herself after giving it her all on the run leg of the Ironman World Championship, eventually finishing third (Credit: Ryan Bethke)
Top image credit: Tom Pennington/Getty Images for Ironman