For more than 50 years, Madonna Buder has taken on the prefix 'Sister' after becoming a nun. And 30 years ago, she added runner to her resume, making her the "Nun on the Run."

She's completed more than 40 marathons and 34 Ironman triathlons and says she uses her time while running to talk to God.

Two years ago, at the age of 75, Buder became the oldest woman in history to finish the Ironman World Championships and has become an in-demand motivational speaker.

She talks with Growing Bolder about being competitive in three sports and how her fellow nuns think of her celebrity status.

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