maybe impossible wrote:
I'm 41, 5'4", was yo-yoing between 170-90 a couple years ago before I tried to make a running comeback. Now I yo-yo between 155-60.
Your body just doesn't really respond to training in your 40's as it did in your teens. The weight that you think will melt away with training grudgingly hangs around.
Injuries will pile up, you get frustrated.
Set a more realistic goal. Your pre-fat running times are ancient history, go out and set post fat PR's and try to beat them.
Best of luck in getting under 17, if you get there, you are a freak.
I certainly have smaller goals along the way, but my end-goal is, as you say, to be a freak.
I do like your "post-fat" PR idea. That's good for motivation along the way.