In the months leading up to 2015’s Fall marathons, RunWashington will follow several local runners as they prepare for their races. We’ll chart their progress as they train their legs, lungs and minds for the challenges they’ll race on race day. Each week, we’ll catch up with our runners and see how they’re doing. This week, say hello to Joe Divel of Rockville, Md., who is taking his second shot at the Marine Corps Marathon.