As a runner, MG has definitely brought on a whole new set of obstacles to overcome in order to continue, but keeping in mind the fluctuations that your body will go through, it's possible. I think the most important thing, once you have a plan, is to listen to your body. I completed my second half marathon (and third race) since my diagnosis on 12/2. Unfortunately, I think I may be paying for it now, since my symptoms flared up on me starting 12/3, which is why I say you have to listen to your body. For me, personally, the push is worth it because I wouldn't trade my running for anything. But that's not necessarily a sacrifice everybody is willing to make