Dave McGillivray, Boston Marathon race director and the same for 30 other races during the year, shares what goes in planning a race from distance planning, marketing, ordering of porta-potties, medals, and much more. We get an inside look of how races have changed significantly through the years. Serena Scott Thomas comes by to tell us all about her first ultramarathon and if she would want to run another one. Our go-to real food dietitian, Serena Marie, RD, discusses the importance of calcium and where to get it from besides dairy products.