There are too many unknown aspects to this question to answer it correctly. Is the subject a runaway or a fugitive? What is your relationship to this person? Are you an adult? Is the 'runaway" a minor? What sex is the runaway? Why are you housing the individual? Is sex involved? All these factors must be known before any realistic answer can be given.
You wouldn't.
It depends you could just go to jail.
you going to jail when they find you... For a long long time...
you go away for a very long time
There is no statute of limitations on escape. If you are an escapee from jail, you will never see the charge go away until you are captured, or until you surrender and complete your debt to society.
how long has he been in jail
No. She was never in jail.
People do not rot in jail . . . that is just a way of saying that they will be in jail for a long, long time.
Yes, but youre is properly spelled "your".
Incarceration? Like in jail? No, its not a disability to be in jail be a long time.
He is not currently in jail
Not long if you know what youre doing