There are
1,981 mi
from Schaumburg, IL to Monrovia, CA
That's the driving distance. It would take 1 day 10 hours to go from Schaumburg, Illinois to Monrovia, California.
The flight distance (direct flight from Schaumburg, IL to Monrovia, CA) is 1,705.60 mi.
1,981 mi = 3,187.57 kms