Teen mountain biker races to national championship : compare

At just 13 years old, Maricopa native Kallie Stewart paved her way to a spot in the mountain biking history books. She clinched a handful of state titles and a national championship this year. 

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Arizona , United States , Maricopa , Vermont , Coconino National Forest , Kallie Stewart , Matt Stewart , Arizona Cycling Association South Division , Coconino National Forest In Flagstaff , Arizona Cycling Association ,