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. 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. But the dream scenario turned dark. ZUMAPRESS.com As Oregon Project runner Kara Goucher wrote in her 2023 memoir , “Everything we’d need to win was at our fingertips — equipment, massages, medical care, coaching — and if it wasn’t, we could ask for it.” Even having worked with countless phenomenal runners, Salazar told Cain she had potential to transform the sport.…