Mary Cain was born to run.
At 12, she joined her school’s varsity track team — and was faster than the seniors. Soon, she was breaking records and winning championships.
In 2013, at just 16, she joined Nike’s Oregon Project, run by the famed coach Alberto Salazar. Based at the shoemaker’s Beaverton, Ore., campus, the elite running club offered state-of-the-art training facilities.
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