Hope you have a great trip! As others have suggested, the Milepost is your friend. Shrugs trip is also a great resource, of course. The Iron Butt Association web page also has some great distance riding advice.
If you travel the Haul Road(Dalton), have a functioning CB radio, listen to, and talk to the truckers, if you need to pass one; and if you have one close on you from behind, move over and let them by. When meeting one head on, slow down, move as far away from them as possible, to minimize the shower of rocks and gravel.
Most importantly, if on a big heavy bagger, let the road conditions/weather determine when/if you attempt to go all the way. Trying this road in wet/muddy conditions on a bagger, is not a good idea.
Good luck, and have fun!
2009 Vivid Black FLTR/120R/Dewey's headwork/TMan 625G/Fuel Moto XXX 2/1/2 w/4" mufflers/HPI 55