Is there an official Farscape Map somewhere?
^I doubt it. It's not that kind of show.
If memory serves (and it probably doesn't) only way they know how to get back to Hyneria or Delvia is right through Peacekeeper space. They wanted a route that'd actually work.
^That's pretty much it I think. Plus as I recall Peacekeeper territory is *huge* so getting around it is no easy feat. I may be misremembering but I think there's also something about starburst that makes navigation difficult. I think Pilot has to recalculate their position after every jump and since they're in uncharted space to begin with, it's not hard to get lost.