What I didn't realize was that it would also be a huge strain on my time management skills. The trouble with long runs is not that I can't run that far, it's that I don't have time to run that far! I still haven't made up the one that I missed while I was in New York in March. I don't care if I miss a short run now and then (I've missed three or four of those), but the long runs are really, really important, and I'm afraid that I won't be ready, physically or mentally, unless I've done all of them.
As the training distances have increased, I've found I sometimes start out too fast and find myself completely exhausted near the end. I need to pace myself, but I'm not really sure whether you're supposed to put the same amount of effort into a short run and a long run. Are you supposed to run slowly on the long run, so that it ends up not being much more of an effort than a short run where you really pushed it? Or are you supposed to run slowly on both, and just think of the short one as part of a long one? And also, because I run in three-mile segments, it's harder to pace myself on runs when the distance doesn't divide evenly by three. The eight-milers are particularly annoying that way.
Having said all that, training is going okay. I remember when seven miles was a really big deal. Now, it's pretty easy. I hit the 200-mile mark on Monday, even with the runs I've missed. Also, I've lost three more pounds. And if you see me, remind me to do my fun and educational leg muscle demonstration for you.