Marathon...Really?

Last night Kristi proposed the idea of running a marathon next spring.  She did her homework and wants to do Galveston.  Being an island on the Texas coast it is safe to say the course is very flat.  I told her she was crazy, but there is this little voice in the back of my mind that says "you can do do it".  Wow, 4 weeks ago I was scared of a 5k, now I am considering a marathon.  I am not committed to the idea by any means, but it is something I want to do someday.  That is the cool thing about running.  You prove to yourself daily that you can do anything you set your mind too.