The “Unlimited Youth” film is part of the Nike “Unlimited” Campaign, which includes the “Unlimited Courage” film, “Unlimited You” film that hails both the everyday athletes and the champion athletes who regularly push their limits — and who are poised to prove their unlimited potential this summer and beyond.

“Unlimited Youth” celebrates an extraordinary athlete, Sister Madonna Buder, known as the Iron Nun, and her determination to defy conventional conceptions of age.

At the age of 65, Sister Buder completed the Ironman Triathlon race in 1985. She became the oldest woman to ever complete an Ironman triathlon at age 75. At 82, American nun set a world record as the oldest IRONMAN triathlon competitor. Currently, at 86 years old, she has completed over 40 Ironman races – comprising of a 2.4-mile swim, 112-mile bike and 26.2-mile run. Even with some mishaps along the way like missing a race finish by a matter of seconds, multiple broken bones, wetsuit issues she says that, “The only failure is not to try, because your effort in itself is a success.”

According to Nike, Sister Buder’s introduction to sport came just seven years before her first race in Hawaii, when she attended a workshop on the Oregon Coast that was led by a priest who championed running as a way to harmonize the mind, body and soul. Sister Buder took this creed to the extreme, burning out on the sport before discovering the variety of the triathlon. “That was the salvation,” she declares. Her physical endurance she attributes to listening to her body and maintaining a positive mindset.

“You carry your attitude with you,” Sister Buder elaborates. “You either achieve or you self-destruct. If you think positively, you can even turn a negative into a positive.” Along with this spiritual guidance, she imparts simple, yet easily applicable performance advice to younger athletes: “One step at a time makes a marathon.”

We hope we grow old fit and active just like her! Watch her inspiring video here.