Well... I think in mid-October after the SOBO shuttle business starts tapering off I'm going to try a Palmetto Trail thru hike. I've got Taba's guide and from the looks of it with that and a DeLorme Gazetter with the relevant sections it should be doable.
I had planned on another Sheltowee Trace trail hike but am feeling like a different trail would be nice.
So has anyone hiked any of the northern passages? From the looks of it there is a great deal of road walking until you get to the middle of the state and then it's all off-road.