The marathon always starts after 30K. That's where the problems start. You start without any problems, without any pain. All the pain comes after 30K. Sometimes, it's possible to have pain even in the finger.
I know what I want when I start a marathon: to win! But what do you want? Make sure you're clear in advance and don't go out too fast.
I have to change a lot of things before I become a good marathon runner.
