There are
2,141 mi
from Chatham, IL to Monterey, CA
That's the driving distance. It would take 1 day 13 hours to go from Chatham, Illinois to Monterey, California.
The flight distance (direct flight from Chatham, IL to Monterey, CA) is 1,752.74 mi.
2,141 mi = 3,446.19 kms