National Marathon

So I signed up for the National Marathon in DC next March. I always say I'm never running that far again but this will be the 3rd one I've signed up for since I said I'd do no more. It should be good as I'd rather be cold than hot while running, and lately being outside has been a total running bummer! Got the Woodrow Wilson Half Marathon in September so I'm going to have to get on a treadmill soon. And that would suck but that seems like the only option at this point!