Tentative half-marathon plans are off - Amy has a wedding to go to that weekend. We're discussing other possibilities, but the truth is, I'm toying with the marathon idea again. I figure, why not? I keep saying I'm going to do it. My original promise was to run a marathon if I didn't get into school, and that's looking sadly likely right now. So, I've start talking myself into catching the marathon bug.
I keep doing this every time I -
a) Haven't run consistently for a couple weeks and conveniently forget how much it really sucks sometimes
b) Realize I don't have anything in particular to challenge me right now and
c) Feel somewhat adrift

Now, in all honesty, is 12 weeks enough time to train for a marathon?