Over the last decade, there’s been a major shift in running. You may think I’m referring to types of shoes worn or training ideologies, but no–I’m talking about gender. Starting in 2010, women began dominating men in the number of participants for road races. While many point to Oprah’s completion of the Marine Corps Marathon in 1994 as the kickoff to the women’s running phenomenon, there’s a lot about running that appeals to women, and I would argue this is especially true for women in the 30-60 year age range. For starters, running is one of the lowest barriers-to-entry…