ive never taken 64. in the winter months i use 81/66/17/95. takes me 16 1/2 hours. in the nonwinter months, i use 81/77/26/95. takes me 16 hours. i dont think it would realy matter to much. dont hit the richmond area at rush hour. 17 is a nice 2 lane road. when you hit 95 off of 17 it gets a bit sporty with traffic but i like a challenge.