So far it appears no one is handing over their route, which can be a good thing!
Get out there and make your own! The pines are (in my undersized mind) endless!
A good place to start is the ranger station at Rt70/Rt72 circle, whatever that one is called.
They sell (twenty I think?) topo maps from the USGS of the entire pinelands, for $5 a piece.
From here you could plan some killer LONG fire road routes.
You can also purchase topo maps (pretty damn detailed too) from garmin for your gps device.
But don't forget the double track, single track, deer trails, and (my personal favorite) fire cuts in between.
The pines are AWSOME.
But so are the people going on this 100k! I wish I could join you!