There are
1,965 mi
from Chatham, IL to Oroville, CA
That's the driving distance. It would take 1 day 10 hours to go from Chatham, Illinois to Oroville, California.
The flight distance (direct flight from Chatham, IL to Oroville, CA) is 1,686.83 mi.
1,965 mi = 3,162.85 kms