LAKEWOOD — In preparation for this year’s state track meet, St. Mary’s junior Jackson Neppl poured over hours of video of past races, studying Colorado’s top distance runners and seeing what he could add to his own approach. But there was one runner he kept coming back to: Cherry Creek girls star Riley Stewart. “I watched all her races, all her interviews,” said Neppl, who won the Class 2A 800- and 1,600-meter races.