Considering that the safe zone doesn’t become introduced into the comics until issue 67ish (or about 5 1/2 years) I think it’s going to be a while. Though honestly they’re wrapping up the prison in one year and it took nearly 2 in the comics maybe it’ll be faster. But it’ll have to be at least a season of travel to get there. If they go that way.
Yeah...I just hope we don’t have to wait 2-3 seasons to see Negan. That guy makes the governor look like a choir boy.