Tara Dower of Boulder, Colorado, is a professional runner who ran the entire 2,189-mile Appalachian Trail in a record 40 days. She told Fox News Digital about the experience — and what she took from it. Tara Dower of Boulder, Colorado, is a professional runner who ran the entire 2,189-mile Appalachian Trail in a record 40 days. She told Fox News Digital about the experience — and what she took from it.