I've picked up a book about training for a marathon for absolute beginners. The prerequisite for the 16 week training program is that I have to be able to run 30 minutes at a stretch, 4 days a week for two weeks. I'm just about about there, though it may be pushing it a bit. If I can pull it off, though, I start my first day of real training on my birthday. Barring injury or illness, I might just run a marathon in October.
The book, incidentally, is The Non-Runner's Marathon Trainer. Two college professors occasionally teach a "marathon class." Out of the four classes they've taught, they've had over 200 students and only one didn't complete the marathon (he didn't drink enough and became dehydrated.) The book isn't just about physical training, it's about the mental training. If your mind is not there, you won't make it. This could be an interesting few months.
I was also reading the reviews on Amazon and seeing how many people say they bought the book and finished a marathon. Good to know that others besides the author's students say it works.