There are
2,094 mi
from Elgin, IL to Petaluma, CA
That's the driving distance. It would take 1 day 12 hours to go from Elgin, Illinois to Petaluma, California.
The flight distance (direct flight from Elgin, IL to Petaluma, CA) is 1,821.31 mi.
2,094 mi = 3.22 kms