Significant improvement has been made thus far in the boys mile in 2019.
When looking at times comparable to the 2018 and 2019 season, we've calculated the progression of the top athletes this winter.
North Kingstown (RI) High School's Sam Toolin, for instance, has cut over six seconds off his best time from 2018 and looks in form to break 4:10 this season, his senior year.
Check out more progression in the links below, or click in the slideshow.
Year-over-year Progression: Top Overall Milers Of 2019 - Top Overall Progression