The 24-year-old Pritz was not a star runner in college. In fact, she didn’t even run for her college team. But since graduating from Bucknell in 2010, Pritz has blossomed on the roads. In her marathon debut in New York City in 2011, Pritz finished as top American, running 2:31:52. Last year, she lowered her half-marathon personal best to 1:10:45 and won a national championship at the Gate River Run 25K. The ASICS-sponsored Pritz, who is based in Boulder, Colo., was slated to race the New York City Marathon last fall, but shut down her season after the race was canceled. She’s vowed to race more often in 2013 and will open up her season at the Houston Half Marathon in mid-January. If Pritz can stay healthy — she’s dealt with shin issues on more than one occasion — she may be on her way to becoming the U.S.’s next great female marathoner.