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648. Mary Kate Shea, Director of Professional Athletes and Technical Support/Events at the B.A.A.

"The marathon is so humbling. Anything can happen, and it usually does — even for the best in the world."

We're going back to Boston today, with returning Ali on the Run Show guest Mary Kate Shea. The fastest runners in the world call her "MK," and she's the director of professional athletes and technical support/events at the Boston Athletic Association. Every year, MK is responsible for bringing more than 300 professional athletes to Boston for races including the Boston Marathon, the B.A.A. 5K, the B.A.A. 10K, and more. And the big question everyone was asking this year: How did she get…

The skinny

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