Triathlete Sister Madonna Buder, 86, Stars In New Nike Ad

Nike has released a new ad featuring 86-year-old triathlon-running Sister Madonna Buder—and it’s as awesome as it sounds.

Have you seen Nike’s new ad, “Unlimited Youth”? It celebrates the life of Sister Madonna Buder and her “determination to defy conventional conceptions of age”—and it’s 100 per cent inspiring.

She’s completed a whopping 45 Ironman triathlon’s, earning her the nickname “Iron Nun.”

In this behind-the-scenes video, the St. Louis native claims she didn’t get into triathlon’s until the age of 47 or 48, when a priest suggested it. Check out her story below.

You go, Sister!