If you can run a 5k, you can run a 10k.
If you can run a 10k, you can run a half marathon.
If you can run a half marathon, you can run a marathon.
If you can run a marathon, you can run a 50k.
If you can run a 50k, you can run a 50-miler.
You see where I’m going with this?
Don’t place any limits on what you can do...