Running the NYC marathon in 2014 was my first venture into training for a full marathon. Yes, I run many races and many half marathons at that, but a full one was a different beast.
My first full marathon was a lot - I got injured during training (my knee was pretty much busted), and the windiness on the day of the race was crazy - but I was determined to just finish no matter how many times I had to stop for the bathroom. And I did. In 5 hours and 3 seconds.