There are
2,087 mi
from Antioch, CA to Romeoville, IL
That's the driving distance. It would take 1 day 12 hours to go from Antioch, California to Romeoville, Illinois.
The flight distance (direct flight from Antioch, CA to Romeoville, IL) is 1,795.11 mi.
2,087 mi = 3,359.35 kms