Chloë McCardel

Chloë McCardel has been described as “the greatest endurance athlete on the planet” and “the greatest ultra-marathon swimmer in history.” The youngest person ever inducted into the International Marathon Swimming Hall of Fame, Chloë has dedicated her life to testing the limits of human endurance and inspiring others to do the same.

Chloë’s extraordinary swimming achievements include Australia’s first triple non-stop crossing of the English Channel, eight crossings in a single season (breaking the world record), and a 124.4km unassisted ocean swim in the Bahamas—the longest ratified swim in history. In 2017, she attempted what is widely considered the greatest endurance challenge in swimming: a 136km quadruple non-stop crossing of the English Channel. Though the feat has yet to be completed, her relentless pursuit demonstrates her resilience, determination, and innovative approach to conquering seemingly impossible goals.

Her dedication to training is unparalleled. Chloë swims in water temperatures as low as 11°C for up to six hours, undertakes overnight sessions lasting up to 20 hours in 15°C water, and covers 110–140km per week, alongside pool training equivalent to Olympic-level swimmers. Her commitment to pushing physical and mental boundaries has earned her numerous awards, including the 2016 ‘Poseidon Award’ for International Marathon Swimmer of the Year, the Marathon Swimmers Federation Solo Swim of the Year (Female) in 2014 and 2015, and 19 awards from the Channel Swimming Association for her English Channel achievements.

As a keynote speaker, Chloë brings the same intensity, clarity, and inspiration to her audiences as she does to her swimming. She motivates individuals and teams to embrace challenges, overcome fear, and achieve extraordinary results, illustrating through her own story how perseverance, mindset, and creativity can unlock human potential.