There are
2,137 mi
from West Allis, WI to Oakley, CA
That's the driving distance. It would take 1 day 12 hours to go from West Allis, Wisconsin to Oakley, California.
The flight distance (direct flight from West Allis, WI to Oakley, CA) is 1,791.73 mi.
2,137 mi = 3,438.84 kms