There are
2,105 mi
from Porterville, CA to Danville, IL
That's the driving distance. It would take 1 day 12 hours to go from Porterville, California to Danville, Illinois.
The flight distance (direct flight from Porterville, CA to Danville, IL) is 1,720.42 mi.
2,105 mi = 3,388.05 kms