The Eight-Year-Old Marathoner

Second-grader Zhang Huimin, who lives in southern China, is preparing for the 2016 Olympics.

"On this Saturday, as she does most weekends, the girl will run more than 26 miles before school -- on top of dozens of miles she runs before school each week. Those statistics cry out for skepticism, but watching her run for more than four hours or interviewing marathon officials who recorded her recent races makes it hard to find any hints of a hoax."

Chicago Tribune story.