River Trips (besides the Chattahoochee)

Georgia Water Trails Networks

Several nice looking day trips down in the Florida panhandle; http://www.waltonoutdoors.com/paddle/. 

This 65 miler looks fun, http://content.sierraclub.org/outings/national/brochure/kayak-or-canoe-way-down-upon-suwannee-river-georgia-and-florida-0, but a full week mght just be too long for it.

Here are current/prior "Paddle Georgia" maps; http://www.garivers.org/paddle_georgia/maps.html.  For the "brave" folks, here's a list of GA whitewater opportunities; http://www.riverfacts.com/states/ga.html.

The Chestatee River. 

Whitewater Paddling Rivers in Georgia including the easy Cartecay River.

South Carolina

Alabama

Long Distance Paddling (aka Pipe Dreams)

Obviously, the S2S - The Chattahoochee River from Source to Sea is my driving goal, but one can dream even more and imagine taking on other long distance epics.  The list at http://www.wengerna.com/blog/5-long-distance-paddle-routes/ gives some of the well-known long-distance paddling adventures.  Other pipe dreams could include any of the following.

Savannah River

See https://www.facebook.com/savannahriverpilgrimage/ and https://sourcetoseasavannah.wordpress.com/.

Trinity River

As the wikipedia article states, the Trinity River is 710 miles long stretching from just under the Red River (i.e. Oklahoma) down to the Trinity Bay which is part of Galveston Bay (i.e. the Gulf of Mexico).  I'd imagine starting right at the tip of the official Trinity River in NW Dallas and taking it all the way down to the bays.  These fellas had a short little adventure near the top of my suggested route; http://dallastrinitytrails.blogspot.com/2012/11/exploring-trinity-river-by-canoe.html.

Northern Forest Canoe Trail

Article at https://www.canoekayak.com/canoe/solo-on-the-northern-forest-canoe-trail/?wc_mid=4036:12093&wc_rid=4036:2817941&_wcsid=68C1EE4FB9FF5683CA16AA24113EDBC929845CC882D9C1DA documenting a solo attempt on the 740 mile Northern Forest Canoe Trail.

Keith Lynch's 4000 Mile Journey

Crazy Races