You say "the published route," so it sounds like you mean riding between the two points via a specific route. Without knowing the specific route, it's hard to suggest camping spots. Also, what do you consider "central Jersey?"

In any event, try this to locate state facilities with campgrounds:

http://www.state.nj.us/dep/parksandf...aps/index.html

If you have a general idea of how far you can cover each day, you can also find campgrounds by going to Google Maps and typing in "campgrounds near [name of town]"