+1000 for this. I used Hal Higdon's programs, Novice 1 for my first marathon, Intermediate 1 for my second, Advanced 1 for my third. Followed them almost exact

+1000 for this. I used Hal Higdon's programs, Novice 1 for my first marathon, Intermediate 1 for my second, Advanced 1 for my third. Followed them almost exactly. 3:40 for my first marathon, down to 3:10 for a Boston qualifier on my third; I'm extremely pleased with those results. If you're still excited after 3 marathons, then I would tell you to jump over to letsrun.com and look for advice there.