There are
1,993 mi
from Dekalb, IL to Oroville, CA
That's the driving distance. It would take 1 day 10 hours to go from Dekalb, Illinois to Oroville, California.
The flight distance (direct flight from Dekalb, IL to Oroville, CA) is 1,715.43 mi.
1,993 mi = 3,207.11 kms