Some routes were never designed to be transcribed into RWGPS other than by the author. And this is one of them.
Start at the World Financial Center Ferry terminal and take a $7 ferry ride (12/2013) to Liberty State Park, or take PATH from the WTC to Exchange Place, picking up the route at roughly mile 11. The route follows the Hudson River south and then cut over to Bayonne Park to check out Newark Bay. Then back to Newport, up through Hoboken, Weehawken, Edgewater and over to Overpeck Park for overviews of Overpeck Creek, then looping back up through Leonia, then up into Bergen and back to Hudson Terrace.
Along the way there are great views of the Manhattan skyline, beautiful routes and yes, some not-so beautiful routes, but I think it's worth checking out. The "other side" of the Hudson River has some interesting history and has been experience a resurgence in recent years.
There are bail-out opportunities up until mile 26.