There are
2,157 mi
from West Allis, WI to Petaluma, CA
That's the driving distance. It would take 1 day 13 hours to go from West Allis, Wisconsin to Petaluma, California.
The flight distance (direct flight from West Allis, WI to Petaluma, CA) is 1,832.45 mi.
2,157 mi = 3,470.85 kms