Here in upstate SC, I have found a couple of books I recommend by Hawk Hagebak. They're called Motorcycle Adventures Book 1,2, 3, .....He gives starting and end points, ride times, mileage,points of interest and gas availability. You set your odometer a the start and make the truns based on your odometer. If you want longer trips, link more than one ride together. I've had some good rides out of those books.
I also use the heads/tails = left/right method. Went around th eblock 3 times one day but have also had some awesome rides and discoveries.
Good luck'
Bubba