The longer the distance

About three years ago, I ran in a four mile race. I hadn't run in a while and I was not prepared for it at all. In a word....it was not fun. Ok, that was more than a word. After about a half of a mile, I wanted to stop. It didn't get any better from there and the whole thing was not a great experience. I didn't stop and I pushed through it and finished. About 6 months ago, I ran in a half marathon. I trained for about three months and slept 9 hours the night before. It was more than three times the distance and it was a breeze.... It was actually fun. So, it's not the longer the distace the harder it is. It's, the longer the distance the harder you train. This taught me to shoot for big goals and to be willing to put in the work in the begiining to make it a breeze in the end.