There are
2,068 mi
from West Allis, WI to Simi Valley, CA
That's the driving distance. It would take 1 day 12 hours to go from West Allis, Wisconsin to Simi Valley, California.
The flight distance (direct flight from West Allis, WI to Simi Valley, CA) is 1,755.40 mi.
2,068 mi = 3,327.94 kms