Have you ever run in a marathon before?
no i never have but would love to.  i don't think i could do long distance though.
Do you run shorter distances?
If i were to run it would be a shorter distance. i am a little overweight and i don't think i could do long distance.
I used to enjoy running and actually did a marathon and a couple halfs, but I just don't enjoy it as much anymore. 
I would love to be able to start slow and work up to a longer distance. Get those feel good endorphines flowing.
I hear you.  That's what I used to love about running-- that feeling after a good run!  My body always felt so strong.  I've been doing more strength training lately to get that feeling still.
There are so many marathons each year, something around 800. 
Marathon