Find a coach or someone that knows a lot about the sport that will support you, and they will get you training. Once they think you're ready to compete they will let you know and you can begin to find local trials or meets to run in. If you excel in competition to can move to higher levels (most likely through qualifications.) If eventually your coach isn't good enough, let people around the track know you're looking for someone and you might find a more suitable coach. They will help you get into more difficult races and If you have the experience, you can make it into Olympic trials. If you do well in those, you will make it into the Olympics. Best of luck.

They reach for the stars and beyond. They work extremely hard and don't give up. My swim coach says to push yourself to limit. I don't know how they do it though like the step or anything, lol. All i know is that they don't give up and are determind. VERY determined.

Join a club.

Excel.

Join a bigger club.

Excel.

Get a sports scholarship.

Excel.

etc etc etc

It's the 'excel' bit that matters. Once you've joined a club then everything else should follow.

You have to try out for the Olympics.

I mean whats the first step like do you go into a running club, but I don't know how you get up, or get spotted? Just curious of how it works out and how do you get a coach and stuff? Thanks, out of curiosity.