Our most popular story last year—by about the distance she beats most grown-up runners—was on Sawyer Nicholson, who, at 10-years-old, won the 5K at the Niagara Falls International Marathon. Being geniuses, we decided to check in on her again—and two days later she broke the provincial under-13 record in the indoor 2,000 metres (6:49:64) and set…