There are
1,968 mi
from Naperville, IL to Susanville, CA
That's the driving distance. It would take 1 day 9 hours to go from Naperville, Illinois to Susanville, California.
The flight distance (direct flight from Naperville, IL to Susanville, CA) is 1,684.97 mi.
1,968 mi = 1.61 kms