When did you realize you were ready to run after Boston?
I don't understand the question.
Ah, poorly worded on my part.

When did you realize that you had a real shot at running the BQ or did it come out of nowhere? That was a huge jump in your 3rd marathon.
It came out of nowhere. I'd been training for the half, but after running a different half in 1:32:41 with five weeks to go, I decided to make the jump up to the marathon. IIRC, I hadn't done anything longer than 13-14 miles to that point in my training, so I did a couple of longer runs the next two weekends, and then I did a 3-week taper.A guy I knew (who's since become a good friend) was pacing 3:10 that day, and the weather was perfect (40ish), so I decided to go for it. His pacing was perfect. I hit the half at 1:34:09, and despite battling some nasty GI issues the last 8 miles or so (later diagnosed as ischemic colitis), I hit the finish line at exactly 3:10:00 for my first BQ. (Splits
here.)
Still no idea how I did it, except that it's probably a matter of less is more. I was definitely undertrained, but my legs were fresh, and the weather was perfect. That's all I can come up with.
I'd fail to BQ in my next four marathons, coming up short for various reasons at Boston '08 (3:42:28), Green Bay '08 (3:34:34), Memphis '08 (3:20:18), and RNR Arizona '09 (3:42:09). As such, I didn't get to run Boston '09. I finally got the BQ monkey off my back at Chicago '09, running my best race ever to that point (3:06:10) under near-perfect conditions.
I've since run three more BQ marathons (Boston '10, Chicago '10, and Milwaukee '11). By now I know I can do it, but more importantly, I know
how to do it, so I
expect to do it.
There, now I've appropriately answered your question.