Time to get strong

OK so I did not have a very good marathon on 1-14. I did do better than I thought I would do and I did do as well as I deserved. My time was 4:48.
My training for the Rock and Roll Marathon in Arizona did not go well. My foot, my plantar facietis really bothered me alot until I got the cortizone shot a few weeks before the marathon and I was so slow. I did not even attemp to run with any of the LT people doing the marathon. The few times I did try to run with them it only made me feel frustrated. I would rather just run by myself then struggel to keep up and end up running far behind anyways.
I did get in a pretty decent 21 mile training run at least, Thanks to Linda who ran the middle 12 miles with me. She was not training for a race so did not mind putting up with my slow pace and walk breaks.
I really don't get why the big slow down. I have run all year with the plantar facietis which started early December of 2005. I had a really good Twin cities Marathon this past fall- I PR'd with 4;25 (My previous best at Twin Cities was 4:42) and then followed that up 2 weeks later- Whistle stop in Ashton Wi with 4:19, my best time ever. After that it seemed I could hardley even run a 10 pace.
I did the Winter Carnival !/2 Marathon on Saturday. I went by myself, I felt great- My time was 2:08 to 2:10, So I am feeling alot stronger and my running feels good.
It is time to get strong.
I will try to make sure and run 30 miles a week, 15 during the week and 15 on the weekend. I will also cross train on the stationary bike and eliptical trainer and be consistent with my strangth training. By the second week in Feb I want to get to 35 miles a week. I have got to increase that for my spring 50 mile race.