So I know there is an "A" group and a "B" group for the Olympic trials. So anyone who runs under the "A" qualifying mark can go to the Trials, anyone that runs under the "B" group can possibly go, if a certain amount of A people don't go. Then, they race at Olympic trials (when/where are these held for the USA), and the.. top 3 go to the Olympics? Something like that?
Is there also a qualifying time you need for the Olympics, because obviously some countries have faster people than others?