There are
2,070 mi
from Simi Valley, CA to West Allis, WI
That's the driving distance. It would take 1 day 12 hours to go from Simi Valley, California to West Allis, Wisconsin.
The flight distance (direct flight from Simi Valley, CA to West Allis, WI) is 1,755.40 mi.
2,070 mi = 3.22 kms