There are
2,163 mi
from Redwood City, CA to Antioch, IL
That's the driving distance. It would take 1 day 13 hours to go from Redwood City, California to Antioch, Illinois.
The flight distance (direct flight from Redwood City, CA to Antioch, IL) is 1,827.30 mi.
2,163 mi = 3,480.70 kms