I think I would like to try to run a marathon one day.
Good for you!!!  Keep in mind that a marathon is 26.219 miles long, so you will need to train ahead of time.
That is super far! I dont know if I will be able to do that.
They hold marathons to commemorate the run of  Pheidippides, a Greek messenger who reported the armies win at the battle of marathon in 490 BC
That is really interesting I had no idea
Keep training.  If you get good at marathons, you could go to the Olympics!!!  The marathon was one of the original Olympic events.