Run is just a sense of attitude.

If you are a runner and you don´t usually enjoy when you are at Km 9 and you are just wondering "why am I doing this" "I`m so tired" .....this does not mean that you are a bad runner, actually the 89% of runners don´t enjoy the track, BUT EVERYBODY LOVES THE FEELING OF FINISHING A MARATHON  OR ANY RUNNING TRAJECT....

so don´t give up, because it always worth it!