Naran to babusar is perfecr, will take maximum of 2.5 hours. Babusar to chillas is 1.5 hours as the road is downhill so the vehicles move slowly. Chillas to raikot has some unpaved patches but still cars easily go, came back last week on a grande from Khunjerab. Chillas to gilgit is about 2 to 2.5 hours drive while from Gilgit to hunza its 2 hours drive, Road from Raikot till khunjerab is perfect.
the only rough patch is between chillas and raikot which is almost half metaled