What workout schedule did you use to train for the 1/2 marathon?
Was it Hal Higdon's?
One more question -
What were you doing for your weight training? Did you use a program or did you just pick exercises and go?
I have used the same weight training routine since before I got married. It's called a split routine (a trainer on The Knot health & fitness board always promoted it). MereD follows (or did follow, at least) a similar routine.
I do this routine:
Monday- Chest & triceps, Tuesday - Back & biceps, Wednesday - Abs & shoulders, Thursday - Legs. I do several exercises with each muscle group. I do 3 sets with reps of 12/10/8, increasing the weight I lift with each set (so I might do a set at 50 lbs, at 60 lbs and at 70 lbs if I'm using a machine). On days that I do leg weights, I do not do any cardio, since most cardio requires a lot of leg work and that's too fatiguing.
I sometimes had to shuffle things around when my weekday distances started getting longer & I didn't have enough time to do strength training and run 5 miles. But for the most part, that's what I stick to and it has always worked pretty well for me.