Humana Rock 'n' Roll Chicago races to be held in Grant Park

CHICAGO -- The Humana Rock 'n' Roll Chicago races are kicking off in Grant Park this weekend, with more than 15 thousand runners expected to compete in three events - a 5K, a 10K and a half-marathon.

Among the runners will be race ambassador Kathrine Switzer, a legendary athlete who in 1967 became the first woman to officially complete the Boston Marathon. This weekend, she'll run alongside participants from all over the Chicagoland area and beyond - and it's a homecoming of sorts for Kathrine, who spent part of her childhood living in suburban Park Forest.

Switzer shares her top tips for living a healthy lifestyle, no matter your age.

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This segment was produced with and sponsored by Humana.