There are
2,033 mi
from West Allis, WI to Monrovia, CA
That's the driving distance. It would take 1 day 11 hours to go from West Allis, Wisconsin to Monrovia, California.
The flight distance (direct flight from West Allis, WI to Monrovia, CA) is 1,720.94 mi.
2,033 mi = 3,271.19 kms