TL;DR
Les Mills Sr., co-founder of Les Mills, has passed away at 91 years old. He built a fitness dynasty with his wife Colleen, establishing the Les Mills New Zealand chain of gyms in 1968 and expanding through Les Mills International.
Les Mills Sr., a former Olympian, Commonwealth Games medalist, gym founder, Les Mills International visionary, and former mayor of Auckland, New Zealand, passed away on June 29 at age 91. The announcement came from the New Zealand-based group training company Les Mills International.
Together with his wife Colleen, Les created a fitness dynasty. This began by establishing the Les Mills New Zealand (LMNZ) chain of gyms in 1968. Their work then expanded through Les Mills International, which was started by their son Phillip and his partner Jackie, and is now supported by their children Diana and Les Jr.
Les represented New Zealand in four Olympic Games, competing in the discus and shot put. He won a Commonwealth Games gold medal, three silvers, and one bronze. Later, he became an elite international coach and sports administrator.
He was elected to three terms as mayor of Auckland City, serving from 1990 to 1998. During his tenure, he led sweeping reforms to strengthen communities and improve infrastructure, as well as regenerating the heart of the city and its waterfront with bold development projects.
Les is preceded in death by his wife Colleen, who died in 2005. She was also a world-class track and field athlete. After leaving politics, Les continued to coach athletes, help grow the family businesses, and support several charity initiatives.
In 2002, he was recognized in the Queen’s Birthday and Golden Jubilee Honors, being made a Companion of the New Zealand Order of Merit for services to local government and sport. This complemented his earlier appointment in the 1973 Queen’s Birthday Honors as a Member of the Order of the British Empire for services to sport. In 2022, alongside Phillip and Jackie, he was inducted into the New Zealand Business Hall of Fame.
> We wanted a business that was healthy and good and we were happy with. And we did alright. It was a family business. It always has been. I hope that it always will be.
> He achieved a huge amount in his life. And the common thread throughout – whether in fitness, politics or family life – was that he always wanted to help others.
> Dad was immensely strong, driven, and always cared deeply for the less advantaged. He left a lasting impression on everyone he met, and his spirit lives on in gym workouts around the world, continuing to help people fall in love with fitness.
> Les Mills Sr. leaves behind a legacy that reaches far beyond New Zealand. The clubs he and Colleen built in Auckland demonstrated how fitness facilities can strengthen communities and improve public health, while the Les Mills International programs transformed the way health clubs around the world engage, motivate, and retain their members through the power of group fitness.
> I had the privilege of meeting Les for the first time during the early years of opening Chelsea Piers. Even then, it was clear that he had inspired something much bigger than a fitness brand; he had helped build a movement that brought people together through exercise, making fitness more welcoming and accessible.
> Les Mills International has also been a valued supporter of HFA and our mission to protect, promote, and grow the fitness industry. On behalf of our association and members around the world, we extend our deepest condolences to the Mills family and everyone at Les Mills International. His vision and commitment to improving lives through fitness will continue to shape our industry for generations to come.
Les is survived by his children Phillip and Donna; daughter-in-law Jackie; grandchildren Diana, Les Jr., Gabriel, and Moana; plus many great-grandchildren.
In this story
This story was originally published by Pamela Kufahl in IHRSA / Health & Fitness Association on June 29, 2026. Burnaze summarizes and links to the original reporting.
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